Afroz Maths Course Book 1.2
Afroz Maths Course Book 1.2
Book - 1.2
Numbers-2
Author :
Afroz Ahmad
For JAAIMS
Jamiah Ashraf Academy of
Islam & Modern Science
Website : jaaims.in
Email : admin@afroz.in
(One hundred)
Ten tens = 100
100
(One hundred)
100
100
100
100
100
100
100
100
200 201
Two hundred Two hundred one
100
100
100
100
Hundreds Ones
Tens place
place place
299
Two hundred ninety nine
4
100
100
100
100
100
100
Tens Ones Hundreds Tens Ones
Hundreds
place place place place place
place
300 301
Three hundred Three hundred one
100
100
100
100
100
100
399
Three hundred ninety nine
5
100
100
100
100
100
100
100
100 Hundreds Tens Ones
Hundreds Tens Ones
place place place place place
place
400 401
Four hundred Four hundred one
100
100
100
100
100
100
100
Tens Ones
100 Tens Ones
Hundreds Hundreds
place place place place place place
499
Four hundred ninety nine
6
100
100
100
100
100
100
100
100
100
Hundreds 100 Tens Ones
Hundreds Tens Ones
place place place place place
place
500 501
Five hundred Five hundred one
100
100
100
100
100
100
100
100
100
Hundreds Tens Ones Hundreds 100 Tens Ones
place place place place place place
599
Five hundred ninety nine
7
100
100
100
100
100
100
100
100
100
100
100
100
600 601
Six hundred Six hundred one
100
100
100
100
100
100
100
100
100
100
100
100
Hundreds Tens Ones Hundreds Tens Ones
place place place place place place
100
100
100
100
100
699
Six hundred ninety nine
8
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Tens Ones Tens Ones
Hundreds place Hundreds
place place place place
place
700 701
Seven hundred Seven hundred one
100
100
100
100
100
100
100
100
100
100
100
100
100
Hundreds Tens Ones Hundreds 100 Tens Ones
place place place place place place
100
100
100
100
799
Seven hundred ninety nine
9
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Tens Ones
Hundreds place Hundreds Tens Ones
place place
place place place
800 801
Eight hundred Eight hundred one
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Hundreds Tens Ones Hundreds Tens Ones
place place place place place place
100
100
100
100
100
899
Eight hundred ninety nine
10
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Tens Ones
Hundreds place Hundreds Tens Ones
place place
place place place
900 901
Nine hundred Nine hundred one
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Hundreds Tens Ones
Hundreds Tens Ones
place place place place place place
100
100
100
100
100
100
Hundreds Ones
Tens place
place 999 place
Nine hundred ninety nine
999 + 1 = 1000
11
(One hundred)
Ten tens = 100
100
(One hundred)
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Two Three Four
hundreds = hundreds = hundreds = Five hundreds =
100
100
100
100
100
100
Six hundreds =
100
Seven hundreds =
600 700
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Ten hundreds = 1000 ( One Thousand )
one 100
one 10
Hundreds Tens Ones Tens Ones
place place place place place
100 10
One hundred Ten
one 1000
1000
One thousand
13
Place Value
100
100
100
343
10
10
10
10
Three hundred
forty three
Expanded form
Shortened form
14
100
100
100
100
405
Four hundred five
Expanded form
Shortened form
15
Place value chart of Hindu-Arabic system of numeration
Thousands place
Hundreds = H
Hundreds place
Thousands = T
Ones place
Tens place
Place 1
1,000 100 10
value
Ones period
Hundreds place
Ones place
Tens place
H T O
345
Three hundred
forty five
3 4 5
H T O
530
Five hundred thirty
5 3 0
5 hundreds 3 tens 0 ones
5 3 0 530
5 is in hundreds place, 3 is in tens place and 0 is in ones place
1. Counting from right to left, the first place is called the 'Ones place'
2. Counting from right to left, the second place is called the 'Tens place'.
3. Counting from right to left, the third place in a numeral is called the 'Hundreds place'.
4. Counting from right to left, the fourth place in a numeral is called the 'Thousands place'.
Numbers from 0 to 99
0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
18
Numbers from 100 to 199
100 101 102 103 104 105 106 107 108 109
110 111 112 113 114 115 116 117 118 119
120 121 122 123 124 125 126 127 128 129
130 131 132 133 134 135 136 137 138 139
140 141 142 143 144 145 146 147 148 149
150 151 152 153 154 155 156 157 158 159
160 161 162 163 164 165 166 167 168 169
170 171 172 173 174 175 176 177 178 179
180 181 182 183 184 185 186 187 188 189
190 191 192 193 194 195 196 197 198 199
200 201 202 203 204 205 206 207 208 209
210 211 212 213 214 215 216 217 218 219
220 221 222 223 224 225 226 227 228 229
230 231 232 233 234 235 236 237 238 239
240 241 242 243 244 245 246 247 248 249
250 251 252 253 254 255 256 257 258 259
260 261 262 263 264 265 266 267 268 269
270 271 272 273 274 275 276 277 278 279
280 281 282 283 284 285 286 287 288 289
290 291 292 293 294 295 296 297 298 299
19
Numbers from 300 to 399
300 301 302 303 304 305 306 307 308 309
310 311 312 313 314 315 316 317 318 319
320 321 322 323 324 325 326 327 328 329
330 331 332 333 334 335 336 337 338 339
340 341 342 343 344 345 346 347 348 349
350 351 352 353 354 355 356 357 358 359
360 361 362 363 364 365 366 367 368 369
370 371 372 373 374 375 376 377 378 379
380 381 382 383 384 385 386 387 388 389
390 391 392 393 394 395 396 397 398 399
400 401 402 403 404 405 406 407 408 409
410 411 412 413 414 415 416 417 418 419
420 421 422 423 424 425 426 427 428 429
430 431 432 433 434 435 436 437 438 439
440 441 442 443 444 445 446 447 448 449
450 451 452 453 454 455 456 457 458 459
460 461 462 463 464 465 466 467 468 469
470 471 472 473 474 475 476 477 478 479
480 481 482 483 484 485 486 487 488 489
490 491 492 493 494 495 496 497 498 499
Numbers from 500 to 599 20
500 501 502 503 504 505 506 507 508 509
510 511 512 513 514 515 516 517 518 519
520 521 522 523 524 525 526 527 528 529
530 531 532 533 534 535 536 537 538 539
540 541 542 543 544 545 546 547 548 549
550 551 552 553 554 555 556 557 558 559
560 561 562 563 564 565 566 567 568 569
570 571 572 573 574 575 576 577 578 579
580 581 582 583 584 585 586 587 588 589
590 591 592 593 594 595 596 597 598 599
600 601 602 603 604 605 606 607 608 609
610 611 612 613 614 615 616 617 618 619
620 621 622 623 624 625 626 627 628 629
630 631 632 633 634 635 636 637 638 639
640 641 642 643 644 645 646 647 648 649
650 651 652 653 654 655 656 657 658 659
660 661 662 663 664 665 666 667 668 669
670 671 672 673 674 675 676 677 678 679
680 681 682 683 684 685 686 687 688 689
690 691 692 693 694 695 696 697 698 699
21
Numbers from 700 to 799
700 701 702 703 704 705 706 707 708 709
710 711 712 713 714 715 716 717 718 719
720 721 722 723 724 725 726 727 728 729
730 731 732 733 734 735 736 737 738 739
740 741 742 743 744 745 746 747 748 749
750 751 752 753 754 755 756 757 758 759
760 761 762 763 764 765 766 767 768 769
770 771 772 773 774 775 776 777 778 779
780 781 782 783 784 785 786 787 788 789
790 791 792 793 794 795 796 797 798 799
800 801 802 803 804 805 806 807 808 809
810 811 812 813 814 815 816 817 818 819
820 821 882 823 824 825 826 827 828 829
830 831 832 833 834 835 836 837 838 839
840 841 842 843 844 845 846 847 848 849
850 851 852 853 854 855 856 857 858 859
860 861 862 863 864 865 866 867 868 869
870 871 872 873 874 875 876 877 878 879
880 881 882 883 884 885 886 887 888 889
890 891 892 893 894 895 896 897 898 899
22
Numbers from 900 to 999
900 901 902 903 904 905 906 907 908 909
910 911 912 913 914 915 916 917 918 919
920 921 922 923 924 925 926 927 928 929
930 931 932 933 934 935 936 937 938 939
940 941 942 943 944 945 946 947 948 949
950 951 952 953 954 955 956 957 958 959
960 961 962 963 964 965 966 967 968 969
970 971 972 973 974 975 976 977 978 979
980 981 982 983 984 985 986 987 988 989
990 991 992 993 994 995 996 997 998 999
1 2 3 4 5 6 7 8 9
one two three four five six seven eight nine
20 30 40 50 60 70 80 90
Twenty Thirty Forty Fifty Sixty Seventy Eighty Ninety
1 2 3 4 5 6 7 8 9
one two three four five six seven eight nine
Join 20 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 21, 22, 23, 24, 25, 26, 27, 28, 29
Join 30 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 31, 32, 33, 34, 35, 36, 37, 38, 39
Join 40 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 41, 42, 43, 44, 45, 46, 47, 48, 49
Join 50 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 51, 52, 53, 54, 55, 56, 57, 58, 59
Join 60 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 61, 62, 63, 64, 65, 66, 67, 68, 69
Join 70 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 71, 72, 73, 74, 75, 76, 77, 78, 79
Join 80 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 81, 82, 83, 84, 85, 86, 87, 88, 89
Join 90 to 1, 2, 3, 4, 5, 6, 7, 8, 9 to get 91, 92, 93, 94, 95, 96, 97, 98, 99
24
Writing Numbers from 100 to 999
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99
Nine 9 + 1 = 10
9
The number next to 9 is 10
10 Ten The smallest 2-digit number is 10
28
Number line
A line on which numbers are marked is called 'The number line '.
0 1 2 3 4 5 6 7 8 9 10 11 12
Comparision of numbers
We can compare the numbers by saying which is greater and which is smaller.
Ex : 5, 2
5 dots are there in the left set and 2 dots are there in the right set.
Ex : 3, 6 29
3 dots are there in the left set and 6 dots are there in the right set.
Ex : 4, 4
4 dots are there in the left set and 4 dots are there in the right set.
4 = 4 4 is equal to 4
Ex : 983, 34
983 has 3 digits ( 9,8,3) and 34 has 2 digits (3,4)
So 983 > 34
983 is greater than 34
Ex : 784, 673
These two numerals contain the same number of digits (3 digits).
The left most digit in 784 is 7
The left most digit in 673 is 6
7 > 6. So 784 > 673
Ex : 784, 763 30
Ex : 784, 783
These two numerals contain the same number of digits (3 digits).
The left most digit in 784 is 7
The left most digit in 783 is also 7
The next left most digit in 784 is 8
The next left most digit in 783 is also 8
The next left most digit in 784 is 4
The next left most digit in 783 is 3
4 > 3. So 784 > 783
0 1 2 3 4 5 6 7 8 9 10 11 12
On a number line, every number is lesser than the numbers on the right
and is greater than the numbers on the left.
Ex : 5 < 6 5> 4
5 is less than 6 5 is greater than 4
Successor
The number that comes just after a particular number is called its 'Successor'.
By adding 1 to any natural number we get its 'Successor'
Ex : 36 + 1 = 37 The successor of 36 is 37
Every number is less than its successor. 31
Ex : 7 < 8
The successor of 7 is 8. 7 is less than 8
Predecessor
The number that comes just before a particular number is called its
'Predecessor'.
By subtracting 1 from any natural number we get its 'Predecessor'
Ex : 42 - 1 = 41 The predecessor of 42 is 41
Ex : 2 > 3 > 4
Here the successor of 3 is 4 and the predesessor of 3 is 2
3 lies between 2 and 4
Ascending order
If the numbers are in the order from smaller to bigger, it is called 'The Ascending
order' of numbers
Descending order 32
Observe the order. These numbers are in the decreasing order from bigger
to smaller
Revision
Number line
0 1 2 3 4 5 6 7 8 9 10 11 12
7 = 7 7 is equal to 7
7 < 8
Predesessor Successor
2>3>4
Predesessor Successor
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Mathematical facts 33
Smallest numbers
Largest numbers
The largest three digit number is 999 ( Nine hundred and Ninety nine )
Howmany numbers ?
100, 101, 102, 103, 104, ............ till 999.... Total = 900
Howmany zeroes ?
10 has 1 zero
Powers of 10
101 10
10 2 10 10 = 100
103 10 10 10 = 1000
Exercise - 1 36
100
100
100
100
100
100
100
A) 410 A) 622
1) 823 2) 647
A) Eight hundred twenty three A) Six hundred forty seven
3) 505 4) 770
A) Five hundred five A) Seven hundred seventy
So, 887 is the largest number So, 967 is the largest number
3) 663, 78, 9
A) 663 contains 3 digits ( 6,6,3) and 78 contains only 2 digits and 9 is one digit number
So, 563 is the smallest number So, 236 is the smallest number
3) 663, 78, 9
A) 663 has 3 digits ( 6,6,3) and 78 has only 2 digits and 9 is one digit number
1) 763, 88
A) 763 has 3 digits ( 7,6,3) and 88 has only 2 digits
3) 894, 863
A) These three numerals contain the same number of digits ( 3 digits)
4) 556, 558
A) These three numerals contain the same number of digits ( 3 digits)
1) 763, 88
A) 763 has 3 digits ( 7,6,3) and 88 has only 2 digits
3) 894, 863
A) These three numerals contain the same number of digits ( 3 digits)
4) 556, 558
A) These three numerals contain the same number of digits ( 3 digits)
1) 741, 742, 743, 744 2) 838, 839, 840, 841 3) 941, 942, 943, 944
A) 745 A) 842 A) 945
( 12 ) Write the number that comes before these numbers 42
1) 741, 742, 743, 744 2) 838, 839, 840, 841 3) 941, 942, 943, 944
A) 740 A) 837 A) 940
A) 823 A) 950
= 8 hundreds + 2 tens + 3 ones = 9 hundreds + 5 tens + 0 ones
= (8 100) + ( 2 10) + (3 1) = (9 100) + ( 52 10) + (0 1)
= 800 + 20 +3 = 900 + 50 + 0
1) 6, 7 8
A) 678, 687, 768, 786, 867, 876
2) 9, 6 4
A) 964, 946, 694, 649, 496, 469
1) 6, 3 2) 4, 7 3) 47, 23 4) 33, 96
A) 6 > 3 A) 4 < 7 A) 47 > 23 A) 33 < 96
Exercise - 2 Bits 45
8) Counting from right to left, the third place is called the ..........................
A) Hundreds place
10) Hundreds place is ....... times greater than ones place A) 100
20) In the numeral 765, the digit 7 stands for 7....... A) hundreds
22) 7 is in hundreds place , 5 is in tens place and 4 is in ones place. The numeral is ........
A) 754
23) 7 is in hundreds place, 0 is in tens place and 8 is in ones place. The numeral is ........
A) 708
24) 8 is in hundreds place, 0 is in tens place and 0 is in ones place. The numeral is ........
A) 800
26) ........ is the smallest number formed by the digits 4, 9 and 7 A) 479
27) ........ is the largest number formed by the digits 5, 8 and 9 A) 985
29) We can compare the numbers by saying which is ................. and which is ............
A) greater and smaller
35) 5 = 5. 5 is ............................... 5
A) equal to
37) If two numerals contain the same number of digits, we compare them by their...........
most digits
A) left
38) If the left most digits are same in a numeral, we compare them by their next digits from
the .......... and so on
A) left
39) On a number line, every number is ................ than the numbers on the right.
A) lesser
40) On a number line, every number is ................ than the numbers on the left
A) greater
41) The number that comes just after a particular number is called its ................
A) Successor
45) The number that comes just before a particular number is called its ................
A) Predecessor
52) If the numbers are in the order from smaller to bigger, it is called ' ..............of numbers
A) Ascending order
53) If the numbers are in the order from bigger to smaller, it is called ' ..............of numbers
A) Descending order
Jamiah Ashraf Academy of Islam and Modern Science 49
Numbers -1
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