 St Leonard's (CofE) Primary School (VC)

Search
Language

# Block 2 - Addition and Subtarction

Key Concept 1: I can add two 2-digit numbers.

Watch this video clip to help with this concept. There is an activity towards the end of the clip.

## Adding 2 Digit Numbers -1.m4v Key Concept 2: I can subtract two 2-digit numbers.

Watch this video clip to help with this concept. There is an activity towards the end of the clip.

## Subtract Two 2-Digit Numbers-1.m4v Key Concept 3: I can add / subtract two 2-digit numbers that cross the tens boundary.

This is perhaps the most challenging part of addition and subtraction for Year 2 children. Any practise of this skill at home as shown in the videos below will be beneficial.

## Adding 2 Digit Numbers that cross the 10s boundary_Trim.mp4 In this clip we look at 38+25 =

We know that this will cross the tens boundary because when the ones are added together they are larger than ten. 8 + 5 will be larger than ten so this calculation will cross the boundary and we need to calculate the answer as shown in the clip.

## SMART Notebook subtract- Slides _ - SMART Notebook (1)_Trim.mp4 In this video clip we look at 53 - 26 =

We know that this calculation will cross the tens boundary because 3 ones subtract 6 ones would be less than 0.

We looked at this in class by recognising that 3 ones is not enough to subtract 6 ones in one jump on the number line so we have to partition it as shown in the video clip.

## School Motto

Be The Best You Can Be

## Mission Statement

'And let us consider how we may spur one another on toward love and good deeds,'Hebrews 10:24

## Get in touch

• St Leonard's Road, Exeter, Devon EX2 4NQ