Search Results For “doubling and halving to 20”

Tricky word problems involving halving numbers up to 100.

Tricky word problems involving halving numbers up to 100.

Fun, practical activity working out which number has the longest halving chain.

A first look at halving.

Tips and hints on how to use mental methods to double and halve larger numbers, including 3-digit numbers.

More doubling and halving of decimal fractions and multiplying a decimal fraction by a single digit.

Mostly addition and subtraction this week, with a hint of doubling and halving.

Doubling and halving, multiplication and division all feature in today's great challenge.

Week 8 moves on to rounding decimals to the nearest whole one, ordering decimals and further work on the 7x and 9x tables as well as some tricky doubling and halving.

Doubling and halving numbers up to 20.

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).

Doubling, halving and some tricky multiplications this week.