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Reach Crest Learning

Add and take away · Lesson 16 of 32

Use ten to help

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

Let's look together

When we add, making ten can help. Start with a number near ten. Split the number we add into two parts.

Use one part to fill ten. Add what is left. We still add the whole amount, just in two small steps.

8 needs 2 to make 10
Look, point and talk with your adult.

Watch how I do it

For 8 + 5, I split 5 into 2 and 3. First 8 + 2 = 10. Then 10 + 3 = 13.

Your turn

Find 9 + 4 by making ten. What is 14 − 0?

Have a go before opening the answer.

Let's check together

9 + 1 + 3 = 13. 14 − 0 = 14: taking nothing away leaves fourteen.

Try it away from the page

Build and record 12+3, 17−2 and 7+0. Keep every starting number and answer within twenty.

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Adult notes · prerequisites, safety and coverage

Prerequisite: bonds to ten. Practise one-/two-digit calculations within 20 with objects; use the related subtraction facts too.

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.