To find the total, or sum, by combining two or more parts (addends), or to increase an amount by adding another.

To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

A multiple of 10 is a number which can be made of groups of ten.

Solve problems involving multiples of ten

Maths

In this unit pupils will represent multiples of ten using numerals and names and and use knowledge of facts and unitising to add and subtract multiples of ten. In the future unit pupils will learn that 100 is composed of ten tens and one hundred ones.  They will learn that 100 is composed of 50s, 25s and 20s. They will use known facts to find multiples of ten that compose 100.

In the prior unit pupils extended their counting to counting the decade numbers and making representations using a variety of different manipulatives. In this unit pupils will represent multiples of ten using numerals and names and and use knowledge of facts and unitising to add and subtract multiples of ten.

Composition of  multiples of 10

In this pyramid, two blocks add together to make the block above it.
What is the missing number at the top of the pyramid?

Tick the fact that can help solve this problem. Sam has 70 p in total. She has 20 p in her pocket and the rest in her purse. How much money does she have in her purse? 

In this pyramid, two blocks add together to make the block above it.
What is the missing number in the pyramid shown with the question mark?

Sofia has 70 p but loses 30 p from a hole in her pocket. How much does she have left? {{ }} pence.

Andeep buys a pencil for 30 p and a toy car for 70 p. How much has he spent? {{ }} pence.

The arrows show the total for the row and column. What number is missing from the middle of this cross?

Aisha shows an answer on a place value chart. Which equation could she have been answering?

Complete the equation. {{ }} tens + 6 tens = 8 tens.

Complete the equation. {{ }} tens − 5 tens = 2 tens.

What is the missing part in this part-part-whole model?

What equation is being represented by this bar model?

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