Question

Find the product:
(i) 3.4 × 17
(ii) 0.745 × 12
(iii) 28.73 × 47
(iv) 0.0415 × 59

Answer 1

i) On dividing the decimal by 10 and multiplying the numbers, we get:

$\frac{34}{10}\times 17=\frac{578}{10}=57.8$

ii) On dividing the decimal by 1000 and multiplying the numbers, we get:

$\frac{745}{1000}\times 12=\frac{8940}{1000}=8.94$

iii) On dividing the decimal by 100 and multiplying the numbers, we get:

$\frac{2873}{100}\times 47=\frac{135031}{100}=1350.31$

iv) On dividing the decimal by 10000 and multiplying the numbers, we get:

$\frac{415}{10000}\times 59=\frac{24485}{10000}=2.4485$