# 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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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
Answer:
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?
Answer:
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?
Answer:
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?
Answer:
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?
Answer:
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.