Worksheet on Weight for Class 4

Solved Questions on Weight

1. The weight of a thin boy is 45 kg less than that of a fat boy. What is the weight in hectograms of a fat boy if the weight of a thin boy is 42 kg?

a) 8.7 hg
b) 87 hg
c) 870 hg
d) 8700 hg

Answer: c) 870 hg

Explanation: Weight of a thin boy = 42 kg

Weight of a thin boy is 45 kg less than that of a fat boy. Hence, the weight of a fat boy is 45 kg more than that of a thin boy.

Weight of a fat boy = 42 + 45
                                = 87 kg

Using 1 kg = 10 hg

Weight of a fat boy in hectograms (hg) = 87 × 10
                                                               = 870 hg

2. Each bottle weighs 390 grams. What is the total weight of three dozen similar bottles?

a) 14 kg 40 g
b) 14 kg 400 g
c) 14 kg 44 g
d) 14 kg 440 g 

Answer: a) 14 kg 40 g

Explanation: Weight of one bottle = 390 g

We know that 1 dozen = 12
So, 3 dozen bottles = 3 x 12 = 36 bottles

Weight of three dozen (36) similar bottles = 390 × 36
                                                             = 14040 g
                                                             = 14000 g + 40 g
                                                             = $\frac{\frac{\mathrm{14000}}{}}{\frac{\mathrm{1000}}{}}$ + 40 g
                                                             = 14 kg 40 g

3. What is the weight of a score of balls in grams if the weight of each ball is 1400 milligrams?

a) 14 g
b) 28 g
c) 140 g
d) 280 g

Answer: b) 28 g

Explanation: Weight of a ball = 1400 mg

We know that 1 score = 20

Weight of a score of balls = 1400 × 20
                                         = 28000 mg

Weight of a score of balls in grams = $\frac{\frac{\mathrm{28000}}{}}{\frac{\mathrm{1000}}{}}$
                                                         = 28 g

4. The weight of a laptop is 1800 decigrams. What is the weight in decagrams of the four such laptops?

a) 18 dag
b) 36 dag
c) 72 dag
d) 108 dag

Answer: c) 72 dag

Explanation: Weight of 1 laptop = 1800 decigrams (dg)

Weight of 1 laptop = $\frac{\frac{\mathrm{1800}}{}}{\frac{\mathrm{100}}{}}$
                               = 18 decagrams (dag)

Weight of 4 laptops = 18 × 4
                                = 72 dag

5. Fill up the blank: 40 × 5.2 hg = _________cg

a) 2080000 cg
b) 0.208 cg
c) 208000 cg
d) 2.08 cg

Answer: a)2080000 cg

Explanation: 40 × 5.2 hg
= 208 hg
= 208 × 10000
= 2080000 cg