CBSE Class 7 Answered

Multiply as you would multiply whole numbers

(b) 1.55 x 2.6

155 x 26 = 4030

Count the number of decimal places. There are 2 decimal places in 1.55 and 1 decimal place in 2.6. So, move the decimal point 3 places to the left in the answer.

4030. → 4.030

Thus, 1.55 x 2.6 = 4.030

(b) 0.17 x 4.92

17 x 492 = 8364

Count the number of decimal places. There are 2 decimal places in 0.17 and 2 decimal places in 4.92. So, move the decimal point 4 places to the left in the answer.

8364. → 0.8364

Thus, 0.17 x 4.92 = 0.8364