S.chand publication New Learning Composite mathematics solution of class 7 Chapter 2 Fractions and Decimals Exercise 2I

 Exercise 2I

Question 1

Multiply :

(a) $\begin{array}{r}0.007 \\\times \quad 5 \\\hline \end{array}$

Sol :

$\begin{array}{r}0.007 \\\times 5 \\\hline 0035\end{array}$

(b) $\begin{array}{r}0.009 \\\times \quad 0.7 \\\hline\end{array}$

Sol :

$\begin{array}{r}0.009 \\\times \quad 0.7 \\\hline 0.0063\end{array}$

(c) $\begin{array}{r}4.05 \\\times \quad 8 \\ \hline\end{array}$

Sol :

$\begin{array}{r}4.05 \\\times 8 \\\hline 32.40 \\\hline\end{array}$

(d) $\begin{array}{r}2.06 \\\times 0.03 \\\hline\end{array}$

Sol :

$\begin{array}{r}2.06 \\\times 0.03 \\\hline 0.0618\end{array}$

Question 2

(a) 39.6×0.8

Sol : 31.68

(b) 7.003×1.6

Sol : 11.2048

(c) 897×0.008

Sol : 7.176

Question 3

(a) 1.025×0.0048

Sol :  0.00492

(b) 0.0035×0.726

Sol : 0.0025410

(c) 7.5089×0.47

Sol : 3.529183