Page 122 - Maths Class 06

5. Convert into rupees using decimals:
(a) 5 paise (b) 80 paise (c) 125 paise (d) 6005 paise

(e) 253 paise (f) 725 paise (g) 50 rupees 90 paise
6. Convert the follow ing into paise:
(a) ` 3.01 (b) ` 5.05 (c) ` 20.50
(d) ` 18.75 (e) ` 50.56 (f) ` 100.00

7. Express as metres using decimals:
(a) 15 cm (b) 60 cm (c) 919 cm
(d) 9 m 7 cm (e) 4 m 15 cm (f) 2 m 45 cm
8. Add the following amount:

(a) ` 49.45 and ` 100.42 (b) ` 435.00 and ` 43.20
(c) ` 270.50 and ` 130.46 (d) ` 150.40 and ` 234.50
9. Subtract:
(a) ` 50.45 from ` 80.30 (b) ` 27.85 from ` 30.81
(c) ` 355.62 from ` 395.00 (d) ` 59.05 from ` 70.00

10. Subtract:
(a) 42 km 244 m from 48 km 840 m (b) 10 km 200 m from 20 km 435 m
(c) 15 km 300 m from 30 km (d) 15 kg 280 g from 20 kg 400 g
(e) 10 kg 300 g from 18 kg 600 g (f) 6 cm 5 mm from 8 cm 2 mm

Like and Unlike Decimals

Like decimals : Decimals having the same number of decimal places are called like decimals.

For examples : 7.62, 9.03, 13.58 are like decimals, each having two decimal places.

Unlike decimals : Decimals having different number of decimal places are called unlike decimals.
For examples : 5.4, 3.72, 15.032 are unlike decimals.

NOTE

Putting any number of zeros to the extreme right of the decimal part of a decimal does not change its value.
Thus, we may write 7.53 = 7.530 = 7.5300, etc.

Addition and Subtraction of Decimals

Rules for Ad di tion and Sub trac tion:
1. Change the given decimals to like decimals.

2. Write the numbers in place value chart or arrange in columns in such a way that the digits of same
place are in same columns.
3. Add or subtract the numbers in column from the rights, the same way as we carry the normal addi -
tion or subtraction.

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