Search Results For “multiplication and division missing numbers”

Here we have some word problems which can all be solved by multiplying or dividing by 10 or 100.

Revision pages on adding to make multiples of 10 and subtraction of multiples of 10.

Addition and subtraction of multiples of 100. Easy if you know the totals of pairs of single digits.

Revising adding and using the relationship between addition and subtraction.

Mental addition and subtraction using decimals to make a total of 1 or 10.

Applying knowledge to add and subtract decimals mentally.

Add twenty and take one is much quicker than trying to add nineteen. But not always!

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.

When we are multiplying by a number ending in 5 we can double the number and halve the other number before multiplying (by a multiple of ten, making it easy).

Remember to move the digits two places to the right to divide by 100.

What happens when a number is multiplied or divided by 10, 100 or 1 000?

Looking at the properties of cuboids, prisms and pyramids.