Page 125 - Start Up Mathematics_3

Word Problems

Example 19: The weight of a packet of chips is 150 g. What is weight
of 7 such packets?

Solution: Weight of 1 packet = 150 g

Weight of 7 such packets = 150 g × 7 = 1050 g = 1 kg 50 g

EXERCISE 8.5

1. Add.

(a) 62 kg 475 g and 33 kg (b) 9 m 62 cm and 18 m 20 cm
(c) 125 km and 68 km 950 m (d) 423 L 603 mL and 111 L 259 mL

(e) 7 L 25 mL, 8 L 50 mL and 12 L 125 mL (f) 430 kg, 27 kg 900 g and 300 g

2. Subtract.

(a) 32 km 260 m from 182 km 350 m (b) 41 m 90 cm from 64 m 25 cm
(c) 19 kg 345 g from 95 kg 680 g (d) 920 g from 8 kg 750 g

(e) 32 L 650 mL from 56 L 825 mL (f) 18 L 295 mL from 675 L 531 mL

3. Neha bought 3 m 95 cm of blue cloth, 1 m 75 cm of red cloth and 5 m 25 cm
of pink cloth. How much total length of cloth did she buy?

4. Aman’s mother made 2 L of juice. Aman drank 5 glasses of juice each measuring
125 mL. How much juice is left?

5. Aditya bought 2 kg of apples, 1 kg 500 g of oranges and 725 g of grapes. How
much quantity of fruit did he buy in all?

LET’S EVALUATE

1. Fill in the blanks.

(a) 5 m = ______ cm (b) 12 km = _________ m
(c) 7543 g = ______ kg _____ g (d) 6215 mL = ______ L _____ mL

(e) 1645 cm = _____ m ____ cm (f) 20 L = ______ mL

(g) 8 kg = _____ g (h) 7 kg 150 g = ______ g

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