Unit 6
Unit 6
Homework
3 Two shipping containers are being loaded into the cargo hold
of a ship. One container weighs 2.3 tons. What is the weight
of the other container if the total weight of both containers
is 4.15 tons?
1.85 tons; 2.3 + n = 4.15; n = 4.15 − 2.3
UNIT 6 LESSON 1 Situation and Solution Equations for Addition and Subtraction 129
6-1 Name Date
Remembering
Add or subtract.
1 4__ 15 =
1 + __ 2 3 + __
4__ 61 = 3 6__
2 - __
51 =
8 8 5 5 3 3
6 3
5 or 5__
__ 10__
4
1__
1
8 4 5 3
3 - __
4 7 - 1__1 = 5 8__ 23 = 6 __
2 + __
4 =
2 4 4 7 7
5 __
1 6
__
2 6
7
7 15 8 5__
4 9 11__
1
5 5
- 3__
1 +1 __
1 3
- 9__
_7 _8 _4
6 37
11__ 6___ 9
1___
7 40 20
3
10 1__
5 11 2__
2 12 6__
6 3 7
1
+ __ 5
+ 7__ + 1___
1
_3 _9 __ 14
2__
1
10__
2 7___
7
or 7__
1
6 9 14 2
130 UNIT 6 LESSON 1 Situation and Solution Equations for Addition and Subtraction
6-2 Name Date
Homework
UNIT 6 LESSON 2 Situation and Solution Equations for Multiplication and Division 131
6-2 Name Date
Remembering
Multiply.
6
__ __
1 __
4
1
7
⋅ 42 = 36 2
3
⋅ 36 = 12 3
5
⋅ 15 = 12
__
1 5
__ 3
__
4
4
⋅ 28 = 7 5
9
⋅ 81 = 45 6
8
⋅ 72 = 27
Write an equation. Then solve. Equations may vary. Show your work.
7 There is __
1
of a peach pie left after a family picnic.
4
Four cousins share the leftover pie equally. What
fraction of a whole pie will each cousin receive?
x = __
1 ÷
4; ___
1
of a pie
4 16
132 UNIT 6 LESSON 2 Situation and Solution Equations for Multiplication and Division
6-3 Name Date
Homework
1 __
2
⋅3=c
3
3
2 __
4
⋅ s = __38
3 2 ÷ __
1 =
q
4
If two whole grapefruit are each
4 fourths 4 fourths
cut into quarters, how many
grapefruit quarters will there be? 1 whole 1 whole
3
__ 5 3 8
1 and __ 2 __ and ___
4 6 5 15
__
5 > __ 10 > ___
9
>
3
or ___ > 3 > ___
__ 8 9 > ___
or ___ 8
6 4 12 12 5 15 15 15
3 + ___
__ 8 = ___
9 + ___
8 = ___
17 = ___
+ __
5 + __3 = ___
10 + ___
9 = 19 = ___
___ 17 + 12
6 4 12 12 12 12 5 15 15 15 15 15
- __
5 - __3 = ___
10 - ___
9 = ___
1 - 3 - ___
__ 8 = ___
9 - ___
8 = ___
1
6 4 12 12 12 5 15 15 15 15
3 15 5
__ ⋅ __ = ___ = __
5 3 ___
⋅ 6 4 24 8 ⋅ __ ⋅ 8 = ___ 8
24 = ___
5 15 75 25
1 41 × 77 ≈ 40 × 80 ≈ 3,200 41 × 77 = 3,157
7.22
2 3.8 × 1.9 ≈ 4 × 2 ≈ 8 3.8 × 1.9 =
36.573
3 7.3 × 5.01 ≈ 7 × 5 ≈ 35 7.3 × 5.01 =
Divide.
3
8 Stretch Your Thinking Kaley has 2__ yards of fabric.
8
___
1
She cuts and uses 1 yards from the fabric. She
16
estimates that less than 1 yard of fabric is left
over. Is her estimate reasonable? Explain.
No. Possible explanation: Using benchmarks,
3
2__ rounds to 2__
1
and 1___
1
rounds to 1;
8 2 16
2__
1 - = __
1 11
2 2
5 Maria wants to buy a new car. She will choose a green car
or a silver car. The green car costs $16,898, and the silver
car costs $1,059.75 less than the green car. What is the
cost of the silver car?
$15,838.25
© Houghton Mifflin Harcourt Publishing Company
Add or subtract.
6
1 6__ 2 1__
2 3 12__
4
7 3 5
3
+ 2___ 5
- __ 5
- 8___
__ 14 _9 __ 10
9___
1
1__
1 3
4___
14 9 10
3
4 11 5 7__
1 6 9__
5 4
5
- 5___ + 1__
2 5
+ 2__
__ 11 _3 _6
6 13
5___ 8___ 12___
7
11 15 12
7 Use the number line to find __
2 __
⋅ 4. 3 5 8
___
Label all the parts above and below. 15
1 2 3 4
0 5 5 5 5 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15
5 Owen and Maya each studied for a test. Owen studied for
90 minutes and Maya studied for 0.5 times that length of
time. Who studied more? Multiply to check your prediction.
© Houghton Mifflin Harcourt Publishing Company
Prediction:
Owen; 90 × 0.5 = 45, and 45 < 90
Solve.
hours
3 6 2
Solve.
1 6.9 2 7.3 3 5.8
× 4.2
__ × 0.90
__ × 0.54
__
28.98 6.57 3.132
Divide.
_90 _ 5 _ 58
7 ⟌
0.05 4.5 8 0.3⟌ 1.5 9 ⟌
0.04 2.32
_ 7.7 9.05
_ _ 54
10 0.64⟌ 4.928 11 0.6⟌ 5.43 12 0.08⟌ 4.32
Multiply.
5 84 6 67 7 88 8 42
× 23
_ × 18
_ × 39
_ × 45
_
1,932 1,206 3,432 1,890
Multiply or divide.
_ 750 _
4,500
9 0.67⟌ 502.5 10 0.21⟌ 945 11 0.55 12 32.5
× 0.30
__ × 6.3
__
0.165 204.75
Solve.
4 30 5 200 6 300
× 10
_ × 70
__ × 80
__
300 14,000 24,000
Multiply.
5 78 6 68 7 41 8 92
×
_ 21 ×
_ 55 ×
_ 33 × 89
_
1,638 3,740 1,353 8,188
Divide.
_70 _600 _ 2
9 ⟌
0.7 49 10 ⟌
0.03 18 11 ⟌
0.4 0.8
300
_ _345 _140
12 0.09⟌ 27 13 ⟌
0.5 172.5 14 ⟌
0.06 8.4
16 Stretch Your Thinking Write an equation that is © Houghton Mifflin Harcourt Publishing Company
Adult Weight
Type of Dog
(in pounds)
Labrador retriever 65.25
German shepherd __
1
75 4
golden retriever 72.8
boxer __
1
70 2
standard poodle 64.3
© Houghton Mifflin Harcourt Publishing Company
1
●
0.05 < 0.5 2 0.61 ●
> 0.6 3 0.77 ●
> 0.7
4 0.34 ●
< 0.43 5 0.28 ●
< 0.29 6 0.981 ●
> 0.978
15
14.5
14
13.5
13
12.5
12
© Houghton Mifflin Harcourt Publishing Company
0
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Student Name
3
Jump Length (ft) 14 __
3
16.5 13__ 15.4
5 4