Search Results For “doubling and halving to 20”

More mental arithmetic, doubling and halving multiples of 5. Should be a whizz if you are good at doubling!

More work on doubling and halving, including larger numbers and fractions.

Halving and doubling word problems.

More word problems, mostly using knowledge of doubling and halving with larger numbers.

Doubling and halving is still a powerful way to work out answers mentally.

Doubling 2-digit numbers and halving 3-digit numbers mentally.

Some people like to start doubling with the units, others like to start with the tens. It doesn?t matter as long as the method is fast and accurate.

Using tables knowledge and doubling to multiply by 12, 24, 18 etc.

Today, we'll explore doubling. Doubling means having the same amount again. To double a number, you add the same number to itself.

Year 1 maths worksheets on adding whole tens, halving shapes and halving amounts of money, knowing addition and subtraction facts and completing number sequences.

Multiply by 5 by multiplying by 10 and halving.

Halving is one of the first steps in understanding fractions.