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CH 3

The document is a mathematics worksheet for Sec 1 students at Permai School, focusing on approximation and estimation. It includes a series of rounding exercises for students to complete, along with an answer key for self-assessment. The exercises cover rounding numbers to significant figures, with various examples provided.

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9 views3 pages

CH 3

The document is a mathematics worksheet for Sec 1 students at Permai School, focusing on approximation and estimation. It includes a series of rounding exercises for students to complete, along with an answer key for self-assessment. The exercises cover rounding numbers to significant figures, with various examples provided.

Uploaded by

corina.nps
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Permai School

Mathematics Sec 1 – Term 1

Ch. 3 Approximation and Estimation (1) (CW / HW)

Name : __________________ Date : _______________

Class : _________

Write your answer in the space provided.

1. Round 2,853 to 2 significant figures ________________________


2. Round 69 to 1 significant figure ________________________
3. Round 0.002730 to 3 significant figures ________________________
4. Round 0.00476 to 1 significant figure ________________________
5. Round 1.987 to 2 significant figures ________________________
6. Round 4,532 to 3 significant figures ________________________
7. Round 4,599 to 3 significant figures ________________________
8. Round 14.603 to 3 significant figures ________________________
9. Round 50,591 to 2 significant figures ________________________
10. Round 65.910 to 2 significant figures ________________________
11. Round 3.772 to 1 significant figure ________________________
12. Round 523 to 2 significant figures ________________________
13. Round 708 to 1 significant figure ________________________
14. Round 40.995 to 1 significant figure ________________________
15. Round 9,550 to 1 significant figure ________________________
16. Round 0.00136 to 2 significant figures ________________________
17. Round 128,391 to 3 significant figure ________________________
18. Round 4.325 to 3 significant figures ________________________

(a) 7.3 (e) 7.005 kg (i) 20.020200 g

(b) 162.5 m (f) 0.045 km (j) 30.00 km

(c) 306 g (g) 0.00234 l (k) 2.500 ml

(d) 3.57 m (h) 82.030 mg (l) 60.001

Find the number of significant figure in each of the following:

1
Answer Key

1. (a) 2

(b) 4

(c) 3

(d) 3

(e) 4

(f) 2

(g) 3

(h) 5

(i) 8

(j) 4

(k) 4

(l) 5

Question 18: 4.33


Question 2: 2,900
Question 3: 70
Question 4: 0.00273
Question 5: 0.005
Question 6: 2.0
Question 7: 4,530
Question 8: 4,600
Question 9: 14.6
Question 10: 51,000
2
Question 11: 66
Question 12: 4
Question 13: 520
Question 14: 700
Question 15: 40
Question 16: 10,000
Question 17: 0.0014
Question 17: 128,00

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