Page 123 - Start Up Mathematics_3

For example,

2 L = (2 × 1000) mL = 2000 mL
3 L = (3 × 1000) mL = 3000 mL

20 L = (20 × 1000) mL = 20000 mL

Example 9: Express 3 L 250 mL in mL.

Solution: 3 L = 3 × 1000 mL = 3000 mL

3 L 250 mL = 3000 mL + 250 mL = 3250 mL

Conversion of millilitres into litres

To convert millilitres into litres, we divide by 1000. For example,
4000 mL = (4000 ÷ 1000) L = 4 L

13000 mL = (13000 ÷ 1000) L = 13 L

Example 10: Convert 4125 millilitres into litres and millilitres.

Solution: 4125 mL = 4000 mL + 125 mL

= 4 L + 125 mL = 4 L 125 mL

Quick Tip
4 028 mL 5 975 mL
When we convert mL into L and mL, the
last three digits always stand for mL. 4 L 28 mL 5 L 975 mL

EXERCISE 8.4

1. Put the correct sign <, > or = in the box.

(a) 75 mL 500 mL (b) 1 L 250 mL + 250 mL

(c) 2 L 1 L + 500 mL + 500 mL

(d) 500 mL 300 mL + 100 mL + 100 mL + 100 mL

2. Fill in the blanks.

(a) 7 L = ______ mL (b) 4 L 275 mL = _________ mL

(c) 18 L = ______ mL (d) 6285 mL = ______ L _____ mL
(e) 1450 mL = _____ L _____ mL (f) 9 L 50 mL = ______ mL

(g) 1080 mL = _____ L _____ mL (h) 3029 mL = ______ L _____ mL

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