Practice the questions of **McGraw Hill Math Grade 8 Answer Key PDF Lesson 15.3 Customary Units of Weight **to secure good marks & knowledge in the exams.

## 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.