Any of the numbers that are added together.

Find the missing addend when adding two-digit numbers

Maths

Use efficient addition strategies to calculate

Combine tens and ones within equations

Add two-digit numbers without crossing the tens boundary

Add 2-digit numbers when crossing the tens boundary

Solve problems involving the addition of two-digit numbers

Explain different strategies used to subtract

Solve equations involving the subtraction of two-digit numbers

Solve problems involving subtraction of two-digit numbers

Subtract two-digit numbers crossing the tens boundary

Find the missing part when subtracting two-digit numbers

Solve problems involving subtraction when bridging 10

Use efficient methods to solve subtraction equations

Solve problems involving addition and subtraction

Create addition and subtraction problems

In this unit pupils apply their knowledge of known facts and understanding of place value to add and subtract with 2-digit numbers both within and across the tens boundary. In the future unit pupils will add 3 addends, understanding they can be added in any order, bridging through 10.

In the prior unit pupils added and subtracted 1s and 10s from 2 digit numbers. They used number facts to add/subtract a single-digit number to/from a 2-digit number and used a part-part-whole model to represent addition and subtraction. In this unit pupils apply knowledge of known facts and understanding of place value to add and subtract with 2-digit numbers within and across the tens boundary.

In this unit pupils apply their knowledge of known facts and understanding of place value to add and subtract with 2-digit numbers both within and across the tens boundary.

Addition and subtraction of two 2-digit numbers

Which of the following is the missing addend?

Use the first equation to help solve the second equation.

Which of the following cannot be one of the tens digits in the equation?

One of the Base 10 blocks has been moved over from one addend to the other. Which of the following could show the new equation? Tick two.

Match the expressions which will have the same sum.

 Which expression will have the same sum as 14 + 53?

Which equation will have a sum in the fifties?

Which equation will have a greater sum than 25 + 61 = ?

Find the missing addend when adding two-digit numbers

Lesson outcome