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Reach Crest Learning

Add and take away · Lesson 14 of 32

Take away: subtract

Read with an adult. Take your time. You can say, point, draw or write your answer.

Let's look together

Subtracting can mean taking some away. The − sign means subtract.

Start with the whole group. Move the objects you take away to one side. Count only the objects left.

Start: 7Take away: 2Left: 57 − 2 = 5
Look, point and talk with your adult.

Watch how I do it

Seven birds are on a fence. Two fly away. I cross out two of seven dots. Five remain, so 7 − 2 = 5.

Your turn

There are nine blocks. Take away four. How many remain?

Have a go before opening the answer.

Let's check together

Five. 9 − 4 = 5.

Try it away from the page

Build eight. Take away one, then put it back. Try taking away three. Explain what changed.

Open your writing and drawing pad

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Explore and practise freely. Opening this lesson or using the writing pad does not save completion or a score.

Adult notes · prerequisites, safety and coverage

Prerequisite: parts and whole. Physically separate removed objects. Do not count the removed group as the answer.

Use large counters, blocks and paper before symbols. Revisit a lesson until the child can show and explain the idea. Numbers grow from 0–10 to 20, then 100; these pages are not a one-sitting course.

These are teaching introductions, not a claim of mastery. Open the subject's coverage map and limits.