Column Multiplication – 4 digit by 3 digit

Now you are secure multiplying by a 3 digit number you can apply your understanding to use a 4 digit number.

Remember to keep all of the digits in the correct column. Once you have practised by following the video below, try and solve these calculations.

3178 x 546 =

1638 x 343 =

1519 x 236 =

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Multiplication as addition on an empty number line – step 3

In this step we are again multiplying a two digit number by a single digit.  To succeed we need to partition the two digit number into tens and units and record each step as a jump on the empty number line. In this stage we are asking the children to mentally multiply by ten and by any single digit. Their understanding of their tables is becoming increasingly important.

Watch the clip below to practice this method with your child.

Multiplication as addition on an empty number line – step 2

In this step we are multiplying a two digit number by a single digit.  To succeed we need to partition the two digit number into tens and units and record each step as a jump on the empty number line.

This is an important stage in multiplication as it helps to reinforce the understanding of place value.

Watch the clip below to practice this method with your child.

Multiplication as repeated addition on an empty number line – step 1

Now we will be using an empty number line to record the jumps of repeated addition. This step is important as it is the first step in a formal written method for multiplication.

When the children record the jumps, they need to be of a good uniform size and large enough for them to record how many they are adding on inside each jump.

Watch the clip below to practice this written method.