Exercise 4.1 (Weight)

Exercise 4.1

1. Fill in the blanks:

(i) 7 kg 400 g = 7400g

(ii) 5g 50mg = 5050 mg

(iii) 9500 mg = 9 g 500 mg

(iv) 15 kg 350g = 15350 g

(v) 6250g = 6 kg 250 g

2. Add the following:

(i) 4 kg 250 g + 3 kg 450 g

4 kg  250 g +

3 kg  450 g

7kg  700g

(ii) 75 g 430 mg + 750 g.

 75 g  430 mg +

750g  000 mg

825g  430mg

(iii) 97 kg 45 g + 77 kg 450 g + 33 kg 250g

97 kg 450 g +

77 kg 450 g

33 kg 250g

207kg 745g

(iv) 75 kg 400 g + 30 kg 250 g

75 kg 400 g +

30 kg 250 g

105 kg 650 g

3. Subtract the following:

(i) 40 kg 350 g − 25 kg 200 g

40 kg 350 g –

25 kg 200 g

15 kg 150 g

(ii) 35 kg 850 g − 18 kg 500 g

35 kg 850 g −

18 kg 500 g

 17 kg 350 g

(iii) 985 kg 475 g − 275 kg 325 g

985 kg 475 g –

275 kg 325 g

710 kg 150 g

(iv) 700 kg − 300 kg 500 g

700 kg 000 g –

300 kg 500 g

399 kg 500 g

4. Multiply the following:

(i) 4 kg 300 g × 7

4 kg 300 g × 7 = 30kg 100 g

 (ii) 17 kg 750 g × 8

17 kg 750 g × 8 = 142 kg

(iii) 25 kg 550 × 4

25 kg 550 × 4 = 102 kg 200g

(iv) 72 g 350 mg × 5

72 g 350 mg × 5 = 361g 750 mg

5. Divide the following:

(i) 99 kg 990 g ÷ 3

99 kg 990 g ÷ 3 = 33 kg 330g

(ii) 147 g 630 mg ÷ 7

147 g 630 mg ÷ 7 = 21g 090mg

(iii) 550 kg 220 g ÷ 11

550 kg 220 g ÷ 11 = 50kg 020g

(iv) 484 g 384 mg ÷ 4

484 g 384 mg ÷ 4 = 121g 096 mg

6. What is the total weight of 7 kg 500g of cashew nut and 3 kg 350g of pista?

Weight of cashewnut = 7 kg 500 g +

Weight of Pista            = 3 kg 350 g

                                       10 kg 850 g

7. Vimal had a sack of cotton seeds weighing 50kg 350g. He used 7 kg 300g cotton seeds to feed his cow. How much cotton seed will be remaining after feeding his cow?

Weight of cotton seeds Vimal had = 50 kg 350 g

Weight of cotton seeds used            = 7 kg 300 g

Remaining cotton seeds                   = 43 kg 050 g

Remaining cotton seeds = 43 kg 050 g

8. A glass bottle can contain 25 g 125 mg of medicine, how much medicine can 7 such bottles contain?

One bottle contains medicine = 25g 125mg

7 bottles contain medicine =  

7 bottles contain medicine = 175 g 875mg

9. 75 kg 750 g of groundnut seed is filled in five bags, how much groundnut seed can a bag contain?

5 bags contain groundnut seeds = 75kg 750g

One bag contains groundnutseeds = 75kg 750g ÷ 5

One bag contains groundnut seeds = 15kg 150g

Answer:

Exercise 4.1

1. i) 7400g ii) 5050mg iii) 9g 500mg iv) 15350g v) 6kg 250g

2. i) 7kg 700g ii) 825g 430mg iii) 207kg 745g iv) 105kg 650g

3. i) 15kg 150g ii) 17kg 350g iii) 710kg 150g iv) 399kg 500g

4. i) 30kg 100g ii) 142kg iii) 102kg 200g iv) 361g 750mg

5. i) 33kg 330g ii) 21g 90mg iii) 50kg 20g iv) 121g 096mg

6. 10kg 850g

7. 43kg 50g

8. 175g 875 mg

9. 15kg 150g