Question

Find:
(i) 2.5 × 0.3
(ii) 0.1 × 51.7
(iii) 0.2 × 316.8
(iv) 1.3 × 3.1
(v) 0.5 × 0.05
(vi) 11.2 × 0.15
(vii) 1.07 × 0.02
(viii) 10.05 × 1.05
(ix) 101.01 × 0.01
(x) 100.01 × 1.1

Answer 1

(i) 2.5 × 0.3 = $\frac{25}{10}$ × $\frac{3}{10}$ = $\frac{75}{100}$ = 0.75

---

(ii) 0.1 × 51.7 = $\frac{1}{10}$ × $\frac{517}{10}$ = 5.17

---

(iii) 0.2 × 316.8 = $\frac{2}{10}$× $\frac{3168}{10}$ = $\frac{6336}{100}$ = 63.36

---

(iv) 1.3 × 3.1 = $\frac{13}{10}$ × $\frac{31}{10}$ = $\frac{403}{100}$ = 4.03

---

(v) 0.5 × 0.05 = $\frac{5}{10}$ × $\frac{5}{100}$ = $\frac{25}{1000}$= 0.025

---

(vi) 11.2 × 0.15 = $\frac{112}{10}$ × $\frac{15}{100}$ = $\frac{1680}{1000}$ = 1.680 = 1.68

---

(vii) 1.07 × 0.02 = $\frac{107}{100}$ × $\frac{2}{100}$ = $\frac{214}{10000}$ = 0.0214

---

(viii) 10.05 × 1.05 = $\frac{1005}{100}$ ×$\frac{105}{100}$ = $\frac{105525}{10000}$= 10.5525

---

(ix) 101.01 × 0.01 = $\frac{10101}{100}$ × $\frac{1}{100}$ = $\frac{10101}{10000}$ = 1.0101

---

(x)100.01×1.1 = $\frac{100001}{100}$ × $\frac{11}{10}$ = $\frac{110011}{1000}$ = 110.011