Let us revise multiplication by 10s and 100s. a) 4 × 10 = b) 20 × 10 = c) 10 × 40 = d) 10 × 10 = 100 e) 20 × 50 = f) 80 × 10 = g) 3 × 100 = 100 × 3 = 300 h) 8 × 100 = = i) 10 × 100 = =

(i) 10 × 100 = 1000 = 100 × 10 (a) 40 (b) 200 (c) 400 (e) 1000 (f) 800 (h) 8 × 100 = 800 = 100 × 8 — (a) 4 × 10 = 40. Multiplying by 10 adds one zero. (b) 20 × 10 = 200. The product has one more zero than 20. (c) 10 × 40 = 400. Multiplication is commutative. (e) 20 × 50 = 1000. 2 × 5 = 10, then add two zeros. (f) 80 × 10 = 800. Adding one zero to 80. (h) Multiplying by 100 adds two zeros. Multiplication is commutative. (i) 10 × 100 = 1000. The product has three zeros total.

Let us revise multiplication by 10s and 100s. a) 4 × 10 = b) 20 × 10…

Question 3 of 47beginner🔧 ApplyFill in the Blanks7 marks

Let us revise multiplication by 10s and 100s. a) $4 \times 10$ = ___ b) $20 \times 10$ = ___ c) $10 \times 40$ = ___ d) $10 \times 10$ = 100 e) $20 \times 50$ = ___ f) $80 \times 10$ = ___ g) $3 \times 100$ = $100 \times 3$ = 300 h) $8 \times 100$ = ___ = ___ i) $10 \times 100$ = ___ = ___

(i)

Answer

$10 \times 100$ = 1000 = $100 \times 10$

(a)

Answer

(b)

Answer

200

(c)

Answer

400

(e)

Answer

1000

(f)

Answer

800

(h)

Answer

$8 \times 100$ = 800 = $100 \times 8$

Explanation

(a) $4 \times 10$ = 40. Multiplying by 10 adds one zero. (b) $20 \times 10$ = 200. The product has one more zero than 20. (c) $10 \times 40$ = 400. Multiplication is commutative. (e) $20 \times 50$ = 1000. $2 \times 5$ = 10, then add two zeros. (f) $80 \times 10$ = 800. Adding one zero to 80. (h) Multiplying by 100 adds two zeros. Multiplication is commutative. (i) $10 \times 100$ = 1000. The product has three zeros total.

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