question_answer 1)

Subtract. (a) ` 18.25 from ` 20.75 (b) 202.54 m from 250 m (c) ` 5.36 from ` 8.40 (d) 2.051 km from 5.206 km (e) 0.314 kg from 2.107 kg

Answer:

(a) We have, ` 20.75 ? ` 18.25 Now,

	Tens	Ones	Tenths	Hundredths
	2	0	7	5
?	1	8	2	5
		2	5	0

\[\because \] ` 20.75 ? ` 18.25 = ` (20.75 ? 18.25) = ` 2.50 (b) We have, 250 m ? 202.54 m Now,

	Hundreds	Tens	Ones	Tenths	Hundredths
	2	5	0	0	0
?	2	0	2	5	4
		4	7	4	6

\[0.75=\frac{75}{100}=\frac{75\div 25}{100\div 25}=\frac{3}{4}\] 250 m ? 202.54 m = (250 ? 202.54) m = 47.46 m (c) We have, ` 8.40 ? ` 5.36 Now,

	Ones	Tenths	Hundredths
	8	4	0
?	5	3	6
	3	0	4

\[\because \]` 8.40 ? ` 5.36 = ` (8.40 ? 5.36) = ` 3.04 (d) We have, 5.206 km ? 2.051 km Now,

	Ones	Tenths	Hundredths	Thousandths
	5	2	0	6
?	2	0	5	1
	3	1	5	5

\[0.18=\frac{18}{100}=\frac{18\div 2}{100\div 2}=\frac{3}{4}\] 5.206 km ? 2.051 km = (5.206 ? 2.051) km = 3.155 km (e) We have, 2.107 kg ? 0.314 kg

	Ones	Tenths	Hundredths	Thousandths
	2	1	0	7
?	0	3	1	4
	1	7	9	3

\[\because \] 2.107 kg ? 0.314 kg = (2.107 ? 0.314) kg = 1.793 kg