Observe the following patterns and complete them.
If 15873 × 7 = 111111 and 15873 × 14 = 222222, then what is 15873 × 21 and 15873 × 28?
$[3]$

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Solution

Given:
15873 × 7 = 111111

15873 × 14 = (15873 × 7) × 2 = 111111 × 2 = 222222
$[1]$

15873 × 21 = (15873 × 7) × 3 = 111111 × 3 = 333333
$[1]$

15873 × 28 = (15873 × 7) × 4 = 111111 × 4 = 444444
$[1]$

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Similar questions

Observe the pattern and complete it.

$15873 \times 7 \times 1 = 111111$

$15873 \times 7 \times 2 = 222222$

$15873 \times 7 \times 3 = 333333$

$15873 \times 7 \times . . . . . = 444444$

$15873 \times 7 \times 5 = . . . . . . . . .$ $. . . . . . . . . . \times 7 \times 6 = 666666$

Question 76 (ii)

Write the next three rational numbers to complete the pattern:
$\frac{- 8}{7}, \frac{- 16}{14}, \frac{- 24}{21}, \frac{- 32}{28},$ ___ ___ ___

Observe the following patterns and complete them.

If 15873 × 7 = 111111 and 15873 × 14 = 222222 then what is

15873 × 21 =? and 15873 × 28 =? ( 2 marks)

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