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LO: To add/subtract any pair of two-digit numbers, including crossing 100.PowerPoint Presentation

LO: To add/subtract any pair of two-digit numbers, including crossing 100.

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### LO: To add/subtract any pair of two-digit numbers,including crossing 100.

### What is the differencebetween 85 and 58?

### How much more is 97than 45?

### LO: Extend written methodsto column addition ofintegers less than 10 000.

### I have £7587 in my savings account. I get five numbers in the National Lotto game and win£5675. How much money do I have now?

### I have £7587 in my savings account. I get five numbers in the National Lotto game and win£5675. How much money do I have now?

### I have £7587 in my savings account. I get five numbers in the National Lotto game and win £5675. How much money do I have now?

### £4764 + £3457 the National Lotto game and win £5675. How much money do I have now?

### £4764 + £3457

### £4764 + £3457

### £4764 + £3457

### £4764 + £3457

### What have we learned? the National Lotto game and win £5675. How much money do I have now?

### Task: Work through the following addition, adding the least significant digit first.

28.06.05

Q What pairs of numbers can you see with a total of 100?

28.06.05

Q What calculation do we need to carry out in order to answer this question?

Q What will the answer be approximately? How can we work out the answer?

Q How many thousands will there be? the National Lotto game and win £5675. How much money do I have now?

Q How many hundreds will there be? the National Lotto game and win £5675. How much money do I have now?

Q How many tens will there be? the National Lotto game and win £5675. How much money do I have now?

Q How many units will there be? the National Lotto game and win £5675. How much money do I have now?

1234 the National Lotto game and win £5675. How much money do I have now?

1008

1982

5934

1673

5632

6207

3794

1208

6240

5046

Q. What has been done differently?

£4764 + £3457

Well Done!! significant digit first.

You can:

Use written column methods for the addition of two or more integers less than 10 000;

• Know that units should line up under units, and so on.

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