Find the missing part when subtracting two-digit numbers

Maths

In this unit pupils will learn to find 10 more or less than a 2-digit number. They will  add and subtract 10 to/from a 2-digit number using number facts. 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 will learn to find 10 more or less than a 2-digit number. They will  add and subtract 10 to/from a 2-digit number using number facts.

Addition and subtraction of two 2-digit numbers

Which equation has a whole that is a multiple of 10

Which bar model represents the equation shown? 43 = 60 − ?

Write the addition equation you would use to check this subtraction. 57 − 33 = 24

Which number would solve the equation. 76 − {{   }} = 23

Which bar model would represents the equation shown? {{  }} − 42 = 25

Which of the following equations will result in a multiple of 10?

Which number line could be used to solve the equation shown? 73 − 36 = ?

Use the pattern to predict the answer to the next equation.

Use the pattern to predict the next equation in the sequence. The next equation will be {{ }}

Write a subtraction equation, then solve it to find the missing part in the bar model.

Match each equation to the number that correctly completes it.

This lesson will soon be taken down.

Find the missing part when subtracting two-digit numbers

Lesson outcome