Page 161 - Start Up Mathematics_4

2. Subtract.

(a) ` 132.47 from ` 927.65 (b) ` 1,268.39 from ` 4,150
(c) ` 3,154.80 from ` 6,576.21 (d) ` 3,986.95 from ` 9,020.40

3. Multiply.
(a) ` 32.65 × 19 (b) ` 45.26 × 12 (c) ` 92.48 × 15

4. Divide.
(a) ` 8,361.84 by 8 (b) ` 9,655.29 by 9 (c) ` 3,451.85 by 17

5. Which is a better buy?
(a) 8 m roll of black ribbon for ` 15.20 or 9 m roll of black ribbon for ` 18.90
(b) 3 packs of DVDs for ` 77.25 or 7 packs of DVDs for ` 174.04
(Hint: Calculate the price of 1 item in each to compare.)

SOME NCERT TEXTBOOK QUESTIONS

1. Kiran has bought some junk from junk collectors.
Look up the rate list to see today’s rates. Help Kiran
to find out the cost of the junk. Rate-List

(a) How much will Kiran pay for 31 kg newspaper? Kind of Junk Price of 1 kg
(b) How much will Kiran pay for 42 kg newspaper? 1. Waste paper ` 4/-
(c) Also find the cost of: 2. Newspaper ` 5/-

(i) 22 kg of plastic 3. Iron ` 12/-
(ii) 23 kg of waste paper 4. Brass ` 170/-

(iii) 12 kg of iron 5. Plastic ` 10/-
Can you do this without writing?

2. Kiran paid ` 919 to the junk collectors. When she sold the junk she got these notes
and coins from Dinu.

28 coins of

18 notes of Specimen
5 notes of Specimen

1 note of 9 notes of Specimen
Specimen

153