Working efficiently means finding a way to solve a problem quickly whilst also maintaining accuracy.

Solve one and two-step problems in different contexts

Maths

In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship In the future unit pupils will identify the addends and the sum in column addition They will use their knowledge of place value to correctly lay out column addition

In the prior unit pupils reviewed and secured previous knowledge of adding 3 addends, understanding they could be added in any order, bridging through 10. In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship.

Understand additive relationships and apply them to rearrange equations

What is the most efficient way of finding the missing number? $$\square$$ + 298 = 301

Find the missing number. $$\square$$ − 7 = 37

Find the missing number. 41 − {{ }} = 11

Find the missing number. 402 + 50 − {{ }} = 412

41 snails are on a log. Some snails creep away. There are now 27 snails on the log. How many snails crept away?  

285 people are on a train. At the next stop, 59 people get off and 60 get on. How many people are on the train now? 

What is the missing number? 2 + $$\square$$ = 30

What is the missing number? $$\square$$ − 5 = 8

This lesson will soon be taken down.

Solve one and two-step problems in different contexts

Lesson outcome