To help us find the missing number in an addition calculation we can use a number line. watch carefully as we use the numbers we have to help us solve the calculation.

# Tag Archives: Addition

# 1: Finding the missing number in an addition calculation – using a number line

To help us find the missing number in an addition calculation we can use a number line. watch carefully as we use the numbers we have to help us solve the calculation.

# A4: Partitoning for Addition

Partitioning is a good way to complete addition calculations. You could also use this method to help you work out calculations mentally.

When you use this method, remember to keep your digits in the correct column.

# A2: Counting On Using a Numberline

Using a printed a number line the children can solve simple calculations within 10 by counting on.

Remember to underline the number your start on. Count the jumps carefully and underline the number you end on.

# A1: Adding the Largest Number First

Using counters or other practical apparatus the children can find the sum of two single digit numbers.

Remember to form each number correctly and count carefully!

# 2 digit add 1 digit using a ten frame

Using a ten frame helps children see the relationship between numbers and reinforces their understanding of number bonds.

# 1 digit add 1 digit using a ten frame

Using a ten frame helps children see the relationship between numbers and reinforces their understanding of number bonds.

# Column addition with carrying

Now your child has practiced addition in columns without carrying, they are ready to understand why the ten needs to be carried across to the tens column.

Explain that any number greater than 9 can not be written in the units column. They will need to partition the number into tens and units and write the additional ten below the tens column ready to be added. Again reinforce that we always begin with the units column.

If they cross out the additional ten when adding, it will encourage fewer mistakes when adding mentally.

Watch the clip below to practice with your child.

# Column addition without carrying

Now your child has a secure understanding of the value of digits within each column they are ready to move to column addition without carrying.

This means that the total in the units column does not go above 10. Explain the importance of keeping the sum and the answer in columns as this will help to prevent mistakes when adding .

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

# Expanded column addition

This stage of addition reinforces the understanding of place value. It ensures that the child knows they are adding groups of ten and not just two columns of units.

Watch the clip below to practice this method your child.