Subtractors - Term One

What to do when you have finished these?

STRATEGY

KNOWLEDGE

Week 9

What numbers are 100 more and one hundred less than these?

1. 623

2. 1845

3. 7345

4. 843

5. 8324

How many hundreds and tens are in these numbers?

6. 565

7. 7342

8. 861

9. 3987

10.912

Week 8

What numbers are 100 more and ten less than these?

1. 745

2. 3421

3. 1256

4. 561

5. 1176

How many hundreds and tens are in these numbers?

6. 343

7. 3475

8. 496

9. 269

10.2341

Subtractors are working in the Early Additive Stage and aiming towards the Advanced Additive Strategy Level.

We are working on solving addition and subtraction problems by using mutliple strategies such as:

- Jumping the Number Line
- Adding the ones and tens seperately when appropriate
- Reversing problems and then using an appropriate method
- Adjusting one number to the nearest hundred

We are learning how many tens, hundreds, thousands there are in numbers over 1000.

We are learning how to solve Multiplication problems using multiple strategies such as:

- Splitting Factors 28 x 7 = (20 x 7) + (8 x 7)
- Rounding and Compensating 5 x 68 = (5 x 70) - (5 x 2)
- Proportional Adjustment 3 x 27 = 9 x 9

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