Arithmetic paper 4 Once you have completed the arithmetic paper, - PowerPoint PPT Presentation

Arithmetic paper 4 Once you have completed the arithmetic paper, use the slides to help you to understand where you have made your mistakes. Are your scores improving each week?

You will need to subtract 100 from the hundreds column. 800 - 100 =700 704 To answer this we can focus on the number of tens. 18 tens - 4 tens = 14 147 tens

3 x 9 = 27 30 x 9 = 270 2 x 9 = 18 32 x 9 = 288 288 Remember the denominator stays the same. 9 11

Remember the denominator stays the same. 6 10 5 1 1 8 + 2 9 0 4 2 2 0 8 8022 1 1

1 5 1 7 8 6 2 9 - 7 6 1 8 6 8 7 7868 You must know your times tables to 12 x 12. 54

73 2 9 3 x 7 1 2 0 5 2051 6 2

8 . 3 3 0 . 0 9 + . 8 4 2 8.42 1 We must move th th the digits 2 T O h t places to the 9 3 right as we are 9 0 3 dividing by 100. 0.93

66 3 = 22 ÷ 22 x 2 = 44 44 You can use a bar model to help you with this. First, you must find 1/3 of 66. 22 22 22 66

1 2 1 7 8 1 3 9 3 8 1 - 7 4 9 2 8 9 3 1 8 31,889 69,500

4 7 8 2 3 7 + 5 6 3 9 2 5 6 2 9 3 4 534,629 1 1 1 5 x 5 x 5 = 125

3 x 40 = 120 30 x 40 = 1200 1200 Use known facts to help you to ÷ 56 7 = 8 calculate 560 70 = 8 ÷ quickly. 8

th T O Th t H h 6 7 9 6 7 9 0 6790 As we are multiplying by 1000, we must move the digits 3 places to the left. A zero is needed as a place holder.

x2 3 4 3 8 + 8 4 x2 8 6 3 9 or 1 1 = + 8 8 8 8 Steps to success Find the lowest common denominator. Convert both fractions. In this case 3 will remain the 8 same. Remember, when converting, whatever has been done to the denominator, must be done to the numerator. Calculate

See notes on previous slide. 4 12 x3 11 1 - 8 x3 4 12 11 3 8 12 - = 12 12 12

4 3 x 1 5 or 2 2 12 5 5 Steps to success Convert the whole number into a improper fraction. Calculate Convert into a mixed number. Remember, sometimes this will be a whole number only.

8 1 6 . 9 0 1 . 0 3 - . 8 5 7 5.87 Don't forget to ensure that your columns are lined up correctly. You need to use a zero in the hundredths column to be able to subtract.

1 3 6 x 2 1 1 3 6 7 2 0 2 1 2 8 5 6 2856 Remember to use a zero to show that you are multiplying by a ten.

9 1 7 6 x 4 3 5 2 8 2 7 1 2 3 6 0 4 7 0 2 3 3 9 4 5 6 8 394,568 1

0 4 7 4 6 9 4 2 3 47

3 1 2 0 1 1 5 6 0 1 5 1203