MATHS [1 Mark Question Answer]

Weight of 8 objects = 51.2 kg
∴ Weight of 1 object = 51.2 ÷ 8 kg = 6.4 kg

In 3.6 ÷0 .12 or 360 ÷ 12 = 30, significant figure are 2.

In 008 x 25 = 2.00 = 2 significant figure is 1.

In 4.2 x 0.6 = 2.52, significant figure are 3

In 0.0062, significant figures are 2.

In 19.0, significant figures are 3

In 7.0068, significant figures are 5

In 0.35, significant figures are 2.

35.06 : In this significant figures i.e. digits are 4

(0.9)²
⇒ 0.9 x 0.9 = 0.81
(Sum of decimal places 1 + 1= 2)

4.4064 ÷ 4 = 1.1016

4.672 by 8 = 4.672 ÷ 8 = 0.584

27.918 by 9 = 27.918 ÷ 9 = 3.102

12.8 by 4 = 12.8 ÷ 4 = 3.2

324.76 by 1000 = 324.76 ÷ 1000 = 0.32476

7.8 by 100 = 7.8 ÷ 100 = 0.078

54.9 by 10
= 54.9 ÷ 10 = 5.49

0.3 × 0.03 × 0.003 = 0.009 × 0.003
= 0.000027
= 0.24

0.84 × 2.2 × 4 = 0.84 × 8.8 = 7.392
84
× 88
672
6720
7392

0.01 × 0.001= 0.00001

234.8 x 10 = 2348,
234.8 x 100 = 23480,
234.8 x 1000 = 234800

16.27 x 10 = 162.7,
16.27 x 100 = 1627,
16.27 x 1000= 16270

0.0359 x 10 = 0.359,
0.0359 x 100 = 3.59,
0.0359 x 1000 = 35.9

4.8 x 10 = 48,
4.8 x 100 = 480,
4.8 x 1000 = 4800

0.112 x 10= 1.12,
0.112 x 100 = 11.2,
0.112 x 1000= 112

0.5 x 10 = 5,
0.5 x 100 = 50,
0.5 x 1000 = 500

5.037 by 8 = 5.037 × 8 = 40.296

5.8 by 4 = 5.8 × 4 = 23.2

6.4 by 1000 = 6.4 × 1000 = 6400

2.948 by 100 = 2.948 × 100 = 294.8

0.87 by 10 = 0.87 × 10 = 8.7

(5.4 – 0.8) + (2.97 -1.462)
= 4.6 + 1.508 = 6.108

256.1 = Two hundred fifty six point one,
10.22 = Ten point two two,
0.634 = zero point six three four.

0.005 = zero point zero zero five,
0.207 = zero point two zero seven,
111.519 = one hundred eleven point five one nine.

0.02 = zero point zero two,
0.56 = zero point five six,
13.06 = thirteen point zero six.

1 .9 = one point nine,
4.4 = four point four,
7.5 = seven point five.

0.4 = zero point four,
0.9 = zero point nine,
0.1 = zero point one.