1. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1 Objective: Count up to find a difference between two/three-digit numbers and multiples of 100

2. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1 100 - 58 Hint: Think about how we can subtract by counting up!

3. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1 8 20 1 4 5 3 9 6 7 100 - ? Choose 2 cards. Write a 2-digit number using those digits. For example, choose 3 and 7 and write 37 or 73. Subtract your number from 100. Write your answer.

4. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1  Work in pairs.  Take it in turns to make a two-digit number.  Subtract the number from 100 by ‘counting up’.  How many subtractions can you complete in two minutes? 100 – 58 = ? 100 – 74 = ? 100 – 31 = ? 100 – 45 = ?

5. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1 258 400 300 42 100 400 – 258 = Use counting up to subtract.

6. © Hamilton Trust Keeping Up Term 1 Week 3 Day 1 300 – 279 400 – 348 700 – 565 800 – 683 900 – 632 700 – 447 800 – 489 600 – 275 Work out the following: