Page 172 - Start Up Mathematics_6

EXERCISE 8.2

1. Add the following:
(a) 56.345 + 74.76 + 897.098 (b) 1,003.004 + 1.3467 + 2.398

(c) 5.897 + 120.34 + 2,000.009 (d) 1,234.432 + 567.834 + 78.342
2. Subtract the following:
(a) 789.678 – 213.432 (b) 654.008 – 367.231

(c) 9.006 – 7.123 (d) 394.283 – 45.132
3. Find the difference between:
(a) 5 m 8 cm and 3 m 80 cm (b) 7 kg 450 g and 4 kg 600 g

4. What should be added to 23.459 to get 50?
5. What should be subtracted from 123 to get 56.65?
6. The maximum temperature of Kolkata city was recorded as 44.6°C and minimum
temperature was recorded as 33.9°C. What is the difference in temperature?

7. Avneet had ` 110 with her. She bought some stationery items for ` 65.90. How much
money is left with her?
8. Raja purchased vegetables for ` 89.50, grocery for ` 236.25, fruits for ` 34.65 and refined
oil for ` 65.35. How much did he spend altogether?
9. Rehan went to a footwear shop with his family. He bought a pair of shoes for himself for
` 999.95, for his wife for ` 495.95 and a pair of sandals for his daughter for ` 299. How
much money does he have to pay to the shopkeeper?
10. Himani buys a pair of trousers and a shirt for her father for ` 565.99 and ` 455.50
respectively. What is the total cost of these items? If she has ` 1,200, how much money
is left with her after shopping?

11. Abdul went to a store to buy some items. He bought sugar for ` 45.65, tea leaves for
` 78.90, milk powder for ` 111.45, oil for ` 73.20 and fruits for ` 97.75. Calculate the
total amount Abdul had to pay. Also, if he paid ` 1,000, calculate the amount he received
back.

Brainstorming

1. Arrange the following decimals in ascending order of the place values of the underlined
digits.

123.45628 ; 3.802 ; 111.414 ; 762.919

2. Study the pattern and write down the next two terms in each of the following series:
(a) .2, .3, .4, ... (b) .04, .05, .06, ... (c) 2.1, 4.1, 6.1, ... (d) .1, .01, .001, ...

3. Write the decimals represented by P and Q on the number line.

0.75 0.76

P Q

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