today we will be learning: different ways of making totals using odd and even numbers to investigate...

10

Upload: emory-barber

Post on 17-Jan-2016

212 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement
Page 2: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Today we will be learning:

• different ways of making totals using odd and even numbers

• to investigate a general statement.

Page 3: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Mental Activity

We are going to practise adding numbers quickly.

Page 4: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Top Tips

An odd number added to an odd number gives an even number.

Two even numbers added together give an even number.

An odd number added to an even number gives an odd number.

Page 5: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Think about whether each answer will be odd or even before you work out the answer

to these.

12 + 13

11 + 1514 + 12

31 + 32 21 + 35

32 + 26

Page 6: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Think about whether each answer will be odd or even before you work out the answer

to these.

13 + 13

25 + 2515 + 16

11 + 14 51 + 52

55 + 45

Page 7: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Main Activity

Today we are going to investigate using odd and even numbers.

How many totals under 30 can you make using only two odd numbers?

How could you start this investigation?

Page 8: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

You could start with the smallest numbers and work upwards.

1 + 3 = 4

3 + 5 = 8

5 + 7 = 12

Can you see a pattern in how the numbers are growing in each column?

What will the next two pairs of numbers be?

7 + 9 = 169 + 11 = 20

Page 9: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Can you predict what the highest total under 40 will be?

How will you make sure you have added every possible pair of odd numbers and

not missed any out?

Top Tip

Once you have spotted a pattern, you can use it to check for mistakes.

Page 10: Today we will be learning: different ways of making totals using odd and even numbers to investigate a general statement

Group Work

Explore different ways of making totals up to 30 using two odd numbers. Then do the same using two even numbers.

Explore different ways of making totals up to 20 using two even numbers.

Explore different ways of making totals up to 30 using three odd numbers. Then do the same using three even numbers.