Question

32.689 × ${10}^1$ = ?

32.689 ÷ ${10}^2$ = ?

32.689 × ${10}^3$ = ?

• A. 326.89, 0.32689, 32689
• B. 32.689, 326.89, 3268.9
• C. 3.2689, 32.689, 326.89
• D. None of these

Answer 1

The correct option is A

326.89, 0.32689, 32689

${10}^1$ = 10 therefore 32.689 × ${10}^1$ = 32.689 × 10 = 326.89 (by shifting the decimal point once towards right).
Similarly, ${10}^2$ = 100 therefore 32.689 ÷ 100 = 0.32689 (by shifting the decimal point twice towards left)
${10}^3$ = 1000 therefore 32.689 × 1000 = 32689 (by shifting the decimal point thrice towards right)