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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 Objective: Use knowledge of pairs of numbers with one decimal place with a total of 1 to work out what needs to be added to make the next whole number or to make 10 or 100.

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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 0.6 0.3 0.1 0.9 0.5 0.7 0.2 0.4 0.8 0.5 Look at the cards below Write all the pairs of cards which make 1 Why is the same number on two cards? 0 1 One minute challenge!

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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 3.7 10 4.0 0.3 6 Which of these two pairs of numbers add to 10? Now write the bond to 10 for: 2.6, 5.5, 7.8 and 9.4 3.7 and 7.33.7 and 6.3 OR

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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 Work in pairs Choose a number from the cards below Write the pair to ten Together complete them all in one minute! 2.6 How many to make 10? 3.8 2.1 7.4 6.3 8.5 9.2 5.7 Yep, that IS easy! That’s easy! 2.6 7 4 Look at the ones. Think of the bond to 10 and subtract 1. Look at the tenths. Think of the bond to 10.

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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 We use known facts to make it easy to add to 100. Now can we write the bond to 100 for… 53.7 and 72.5 and 24.6 and 19.8? 34.6 + ? = 100 34.6 How many to make 100? Yep, that IS easy! 6 Look at the 10s. Think of the bond to 10 and subtract 1. That’s easy! 34.6 5 Look at the ones. Think of the bond to 10 and subtract 1. 4 Look at the tenths. Think of the bond to 10.

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© Hamilton Trust Keeping Up Term 2 Week 7 Day 1 Use known facts and/or a number line jotting to solve these calculations: 4.5 + 2.5 6.3 + 1.7 3.8 + 8.2 8.7 + 11.3 15.4 + 24.6 27.6 + 12.4 Hint: In each pair, the tenths add to 1.

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Fill in the missing numbers: 1.6.6 + ☐ = 10 2. 8.2 + ☐ = 10 3.4.3 + 5.7 = ☐ 4. 8.3 + 1.7 = ☐ 5.5.4 + 2.6 = ☐ 6. 17.5 + 2.5 = ☐ 7.36.7 + 63.3 = ☐ 8. 25.2 + ☐ = 100 9. 38.2 + ☐ = 100 10. 0.6 + ☐ = 1 11.27.8 + 12.2 = ☐ 12. 44.4 + ☐ = 100 13. 4.3 + 3.5 + ☐ = 10 14. 4.2 + 3.8 + ☐ = 10 © Hamilton Trust Keeping Up Term 2 Week 7 Day 1

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