Short multiplication is an extension of times-tables and enables a faster solution ... Image caption, Now work out 3 x 1 ten. 3 x 10 is 30. Write 3 in the tens column in the answer space.
You would pick 17 since it is smaller and halve it to form the left side of your table ... in the long multiplication. You can cross them out. That leaves the row for 17 and 1.
In long multiplication we break the ... We don’t know our 16 or 27 times tables off the top of our head, so what can we do? 16 = 10 + 6, so to multiply by 16 we could multiply by 10 and multiply ...
For example, a thousand is 10 hundreds, a hundred is 10 tens, and 10 is ten ones. It all comes back to ten, and it makes things pretty straightforward when it comes to operations like multiplication .
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