Use efficient methods to solve subtraction equations

Maths

Use efficient addition strategies to calculate

Combine tens and ones within equations

Add two-digit numbers without crossing the tens boundary

Find the missing addend when adding two-digit numbers

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

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

Write a subtraction equation to calculate the missing part in this bar model and solve it.

Which of the following equations will have a difference of 1?

One of the missing numbers in this equation is 57  Which of the following could be the other missing number? ___ − ___ = 1

In which of the following equations will the missing part be a multiple of 10?

What is the missing digit in the equation?

In which of the following equations will you have to bridge 10?

Which of the following equations is correct?

Solve the following equation. 43 − 25 = {{ }}

Andeep has 76 tickets. He buys the ball. How many tickets does he have left?

Andeep had 66 tickets. He bought a plane and now he has 23 tickets left. How much did the plane cost?

Match each equation to the correct answer.

Use efficient methods to solve subtraction equations

Lesson outcome