1. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 Objective: Subtract two-digit numbers from two-digit numbers and from numbers between 100 and 200 by counting up

2. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 How would you work out the following: 82 – 67 61 – 36

3. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 366140 4 21 61 – 36 = Count up from 36 to 40 then from 40 to 61

4. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 36 and 63 27 and 72 58 and 85 39 and 93 Work with your partner to find the difference between these pairs of numbers: What do all the answers have in common?

5. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 124 – 89 137 – 75 115 – 78 122 – 64 142 – 77 Which will give an answer of more than 50? Which will give an answer of less than 50?

6. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 89124100 11 24 124 – 89 = Count up from 89 to 90 and from 90 to 100, then from 100 to 124

7. © Hamilton Trust Keeping Up Term 1 Week 3 Day 2 124 – 89 137 – 75 115 – 78 122 – 64 142 – 77 131 – 86 205 – 157 217 – 168 Work out the exact answers. Write two more subtractions with answers less than 50. Write two more subtractions with answers more than 50.