Download presentation

Presentation is loading. Please wait.

Published byChristina Cook Modified over 9 years ago

1
Powerful Numbers I am learning to solve multiplication problems with powers (exponents). e.g. 2 2 or 2 3

2
The square below is 2 cubes high and 2 cubes wide. We can work out how many cubes there are by working out 2 X 2 = 4 Using exponents we can record this as 2 2 If I square root the 4. I get 2. This is the length of the sides. The square below is 3 cubes high and 3 cubes wide. We can work out how many cubes there are by working out 3 X 3 = 9 Using exponents we can record this as 3 2 If I square root the 9. I get 3. This is the length of the sides. The square below is 4 cubes high and 4 cubes wide. We can work out how many cubes there are by working out 4 X 4 = 16 Using exponents we can record this as 4 2 If I square root the 16. I get 2. This is the length of the sides.

3
3 3 Can be represented by a cube that is 3 small cubes high, wide and deep. We can work out how many small cubes were used to make these by calculating 3 3 3 3 = 3 X 3 X 3 3 X 3 = 99 X 3 = 27 4 3 Can be represented by a cube that is 4 small cubes high, wide and deep. We can work out how many small cubes were used to make these by calculating 4 3 4 3 = 4 X 4 X 4 4 X 4 = 1616 X 4 = 64

4
Numbers can be raised to powers of 4, 5, 6 etc. These numbers get big very quickly. Lets look at a couple of examples. Try to work these out as we go. 2 2323 2424 2 X 2 = 4 2 X 2 X 2 =8 2 X 2 X 2 X 2 = 16 2525 2 X 2 X 2 X 2 X 2 =32 2626 2 X 2 X 2 X 2 X 2 X 2 =64

5
Work out answers to the questions below. 1) 3 3 2) 2 2 3) 2 4 4) 3 4 5) 2 7 Need some more practise? Try Pg47 & 48 of Teacher Tools Multiplication and Division Book Numeracy resourcesNumeracy resources Click again when you have worked out all your answers. 27 4 16 81 128

Similar presentations

© 2024 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google