Write the following numbers in the usual form.

A. 10 × 5 + 6
B. 100 × 7 + 10 × 1 + 8
C. 100 × a + 10 × c + b

(3 marks)

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Solution

A. 10 × 5 + 6 = 50 + 6 = 56
(1 mark)

B. 100 × 7 + 10 × 1 + 8 = 700 + 10 + 8 = 718
(1 mark)

C. 100 × a + 10 × c + b = 100a + 10c + b = acb
(1 mark)

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