Solve the following problems like Nida did. a) 78 × 4 b) 83 × 9 c) 67 × 28 d) 53 × 37

(a) 312 (b) 747 (c) 1876 (d) 1961 — (a) 78 × 4 = (70 + 8) × 4 = 280 + 32 = 312 (b) 83 × 9 = (80 + 3) × 9 = 720 + 27 = 747 (c) 67 × 28 = 67 × (20 + 8) = 1340 + 536 = 1876 (d) 53 × 37 = (50 + 3) × (30 + 7) = 1500 + 350 + 90 + 21 = 1961

Solve the following problems like Nida did. a) 78 × 4 b) 83 × 9 c)…

Question 20 of 47intermediate🔧 ApplyNumerical4 marks

Solve the following problems like Nida did. a) $78 \times 4$ b) $83 \times 9$ c) $67 \times 28$ d) $53 \times 37$

(a)

Answer

312

(b)

Answer

747

(c)

Answer

1876

(d)

Answer

1961

Explanation

(a) $78 \times 4$ = (70 + 8) × 4 = 280 + 32 = 312 (b) $83 \times 9$ = (80 + 3) × 9 = 720 + 27 = 747 (c) $67 \times 28$ = 67 × (20 + 8) = 1340 + 536 = 1876 (d) $53 \times 37$ = (50 + 3) × (30 + 7) = 1500 + 350 + 90 + 21 = 1961

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