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Hong Kong
Stage 2

Extend multiplicative strategies to larger numbers

Interactive practice questions

Consider the multiplication $16\times5$16×5

a

Fill in the blanks by breaking $16$16 up into factors.

$16\times5=2\times\editable{}\times5$16×5=2××5

b

Solve $16\times5$16×5 by using the factor strategy from part (a).

$16\times5$16×5 $=$= $2\times8\times5$2×8×5
  $=$= $2\times\editable{}$2×
  $=$= $\editable{}$
Easy
1min

Consider the multiplication $20\times25$20×25

Easy
1min

$18\times7$18×7

Easy
1min

$4\times13$4×13

Easy
1min
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