# McGraw Hill Math Grade 8 Lesson 15.3 Answer Key Customary Units of Weight

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## McGraw-Hill Math Grade 8 Answer Key Lesson 15.3 Customary Units of Weight

Exercises

CONVERT

Question 1.
86 oz = ____________ lb
5.375 lb,

Explanation:
As 1 oz = 0.0625 lb, so 86 oz = 86 X 0.0625 lb = 5.375 lb.

Question 2.
8 lb 5 oz = _____________ oz
133 oz,

Explanation:
As 1 lb = 16 oz, so 8 lb  = 8 X 16 oz = 128 oz,
128 oz + 5 oz = 133 oz.

Question 3.
10 T = ______________ lb
22,046.2 lb,

Explanation:
As 1 T = 2,204.62 lb, so 10 T = 10 X 2,204.62 lb = 22,046.2 lb.

Question 4.
2400 lb = ______________ T
1,088.621 T,

Explanation:
As 1 lb = 0.45359237 T, so 2,400 lb = 2,400 X 0.45359237 T = 1,088.621 T.

Question 5.
166 oz = _____________ lb
10.375 lb,

Explanation:
As 1 oz = 0.0625 lb, so 166 oz = 166 X 0.0625 lb = 10.375 lb.

Question 6.
13 lb 6 oz = ________________ oz
214 oz,

Explanation:
As 1 lb = 16 oz, so 13 lb  = 13 X 16 oz = 208 oz,
208 oz + 6 oz = 214 oz.

Question 7.
$$\frac{1}{4}$$ T = ____________ lb
551.155 lb,

Explanation:
As 1 T = 2,204.62 lb,
so $$\frac{1}{4}$$ T = $$\frac{1}{4}$$  X 2,204.62 lb = 551.155 lb.

Question 8.
$$\frac{2}{5}$$ T = ______________ lb
881.848 lb,

Explanation:
As 1 T = 2,204.62 lb, so $$\frac{2}{5}$$ T =
$$\frac{2}{5}$$  X 2,204.62 lb = 881.848 lb.

Question 9.
2 lb 12 oz + 2 lb 5 oz = ______________ oz
81 oz,

Explanation:
As 1 lb = 16 oz, so 2 lb  = 2 X 16 oz = 32 oz,
32 oz + 12 oz = 44 oz and 2 lb 5 oz = 32 oz + 5 oz = 37 oz,
therefore 2 lb 12 oz + 2 lb 5 oz = 44 oz + 37 oz = 81 oz.

Question 10.
104 oz = ______________ lb
6.5 lb,

Explanation:
As 1 oz = 0.0625 lb, so 104 oz = 166 X 0.0625 lb = 6.5 lb.

Question 11.
Barton’s backpack weighs 498 ounces. How many pounds does the backpack weigh?
31.125 lb the backpack weigh,

Explanation:
Given Barton’s backpack weighs 498 ounces.
Number of pounds does the backpack weigh
as 1 oz = 0.0625 lb it is 498 X 0.0625 lb = 31.125 lb.

Question 12.
If Jason weighed 167 lb and he lost 112 oz during the summer, how much does he weigh after losing the weight?
Jason weighs 2,560 oz after losing the weight,

Explanation:
Given If Jason weighed 167 lb and he lost 112 oz
during the summer, much does he weigh after losing the weight is
as 1 lb = 16 oz then 167 lb = 167 X 16 oz = 2,672 oz,
So it is 2,672 oz – 112 oz = 2,560 oz.

Question 13.
Kathleen weighed her two cats. The first cat weighed 7 lb 12 oz and the second weighed 11 lb 15 oz. How much did the two cats weigh in total?
The two cats weigh in total is 315 oz,

Explanation:
Given Kathleen weighed her two cats.
The first cat weighed 7 lb 12 oz and the second weighed 11 lb 15 oz.
As 1 lb = 16 oz, first cat is 7 X 16 oz + 12 oz =
112 oz + 12 oz = 124 oz,
second cat is 11 X 16 oz + 15 oz = 176 oz + 15 oz = 191 oz,
So the two cats weigh in total is 124 oz + 191 oz = 315 oz.

Question 14.
Freddie’s camping gear weighs 70 lb in total. He adds an extra pair of shoes which weighs 2 lb 4 oz and removes tent stakes that weigh 6 lb 8 oz. How much does the gear weigh now?
Gear weigh is 65.75 lb,

Explanation:
Given Freddie’s camping gear weighs 70 lb in total.
He adds an extra pair of shoes which weighs 2 lb 4 oz and
removes tent stakes that weigh 6 lb 8 oz.
So does the gear weigh now is as
1 oz = 0.0625 lb, 2 lb 4 oz = 2 lb + 4 X 0.625 lb =
2 lb + 0.25 lb = 2.25 lb,
so gear weigh + weigh of pair of shoes is
70 lb + 2.25 lb = 72.25 lb,
Now tent stakes weigh is 6 lb + 8 X 0.0625 lb =
6 lb + 0.5 lb = 6.5 lb, After removing tent stakes weighs
we get gear weigh as 72.25 lb – 6.5 lb = 65.75 lb.