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Recurring Decimals โ€“ Converting โ€“ Demonstration

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Presentation on theme: "Recurring Decimals โ€“ Converting โ€“ Demonstration"โ€” Presentation transcript:

1 Recurring Decimals โ€“ Converting โ€“ Demonstration
This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.

2 0. 4 1๐‘ฅ= 0.44โ€ฆ 10๐‘ฅ= 4.44โ€ฆ 9๐‘ฅ= 4 4 9 ๐‘ฅ= ร— 10 Subtract 1๐‘ฅ รท 9
DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 0. 4 1๐‘ฅ= 0.44โ€ฆ ร— 10 10๐‘ฅ= 4.44โ€ฆ Subtract 1๐‘ฅ 9๐‘ฅ= 4 รท 9 4 9 ๐‘ฅ= Simplify if possible.

3 0. 7 1๐‘ฅ= 0.77โ€ฆ 10๐‘ฅ= 7.77โ€ฆ 9๐‘ฅ= 7 7 9 ๐‘ฅ= ร— 10 Subtract 1๐‘ฅ รท 9
DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 0. 7 1๐‘ฅ= 0.77โ€ฆ ร— 10 10๐‘ฅ= 7.77โ€ฆ Subtract 1๐‘ฅ 9๐‘ฅ= 7 รท 9 7 9 ๐‘ฅ= Simplify if possible.

4 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 0. 7 0. 2 1๐‘ฅ= 0.77โ€ฆ 1๐‘ฅ= 0.22โ€ฆ ร— 10 ร— 10 10๐‘ฅ= 7.77โ€ฆ 10๐‘ฅ= 2.22โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 9๐‘ฅ= 7 9๐‘ฅ= 2 รท 9 รท 9 7 9 2 9 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible.

5 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 0. 7 0. 8 1๐‘ฅ= 0.77โ€ฆ 1๐‘ฅ= 0.88โ€ฆ ร— 10 ร— 10 10๐‘ฅ= 7.77โ€ฆ 10๐‘ฅ= 8.88โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 9๐‘ฅ= 7 9๐‘ฅ= 8 รท 9 รท 9 7 9 8 9 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible.

6 0. 2 3 1๐‘ฅ= 0.2323โ€ฆ 100๐‘ฅ= 23.23โ€ฆ 99๐‘ฅ= 23 23 99 ๐‘ฅ= ร— 100 Subtract 1๐‘ฅ
DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 1๐‘ฅ= 0.2323โ€ฆ ร— 100 100๐‘ฅ= 23.23โ€ฆ Subtract 1๐‘ฅ 99๐‘ฅ= 23 รท 99 23 99 ๐‘ฅ= Simplify if possible.

7 DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 1๐‘ฅ= 0.4545โ€ฆ ร— 100 100๐‘ฅ= 45.45โ€ฆ Subtract 1๐‘ฅ 99๐‘ฅ= 45 รท 99 45 99 ๐‘ฅ= Simplify if possible. = 5 11

8 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 1๐‘ฅ= 0.4545โ€ฆ 1๐‘ฅ= 0.5151โ€ฆ ร— 100 ร— 100 100๐‘ฅ= 45.45โ€ฆ 100๐‘ฅ= 51.51โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 99๐‘ฅ= 45 99๐‘ฅ= 51 รท 99 รท 99 45 99 51 99 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible. = 5 11

9 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 1๐‘ฅ= 0.4545โ€ฆ 1๐‘ฅ= 0.3939โ€ฆ ร— 100 ร— 100 100๐‘ฅ= 45.45โ€ฆ 100๐‘ฅ= 39.39โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 99๐‘ฅ= 45 99๐‘ฅ= 39 รท 99 รท 99 45 99 39 99 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible. = 5 11 = 13 33

10 DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 1๐‘ฅ= 0.327โ€ฆ ร— 1000 1000๐‘ฅ= โ€ฆ Subtract 1๐‘ฅ 999๐‘ฅ= 327 รท 999 ๐‘ฅ= Simplify if possible.

11 DEMO Converting Recurring Decimals to Fractions Convert this decimal to a fraction. 1๐‘ฅ= 0.633โ€ฆ ร— 1000 1000๐‘ฅ= โ€ฆ Subtract 1๐‘ฅ 999๐‘ฅ= 633 รท 999 ๐‘ฅ= Simplify if possible. =

12 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 1๐‘ฅ= 0.633โ€ฆ 1๐‘ฅ= 0.298โ€ฆ ร— 1000 ร— 1000 1000๐‘ฅ= โ€ฆ 1000๐‘ฅ= โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 999๐‘ฅ= 633 999๐‘ฅ= 298 รท 999 รท 999 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible. =

13 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. Convert this decimal to a fraction. 1๐‘ฅ= 0.633โ€ฆ 1๐‘ฅ= 0.189โ€ฆ ร— 1000 ร— 1000 1000๐‘ฅ= โ€ฆ 1000๐‘ฅ= โ€ฆ Subtract 1๐‘ฅ Subtract 1๐‘ฅ 999๐‘ฅ= 633 999๐‘ฅ= 189 รท 999 รท 999 ๐‘ฅ= ๐‘ฅ= Simplify if possible. Simplify if possible. = = =

14 Converting Recurring Decimals to Fractions
Convert this decimal to a fraction. 0.1 6 1๐‘ฅ= 0.1666โ€ฆ ร— 10 10๐‘ฅ= 1.666โ€ฆ Subtract 1๐‘ฅ 9๐‘ฅ= 1.5 รท 9 1.5 9 = 15 90 ๐‘ฅ= Simplify if possible. = 1 6

15 Converting Recurring Decimals to Fractions
Convert this decimal to a fraction. 1๐‘ฅ= โ€ฆ ร— 100 100๐‘ฅ= 3.636โ€ฆ Subtract 1๐‘ฅ 99๐‘ฅ= 3.6 รท 99 3.6 99 = ๐‘ฅ= Simplify if possible. = 4 110 = 2 55

16 Converting Recurring Decimals to Fractions
Convert this decimal to a fraction. 0.20 8 1๐‘ฅ= โ€ฆ ร— 10 10๐‘ฅ= โ€ฆ Subtract 1๐‘ฅ 9๐‘ฅ= 1.88 รท 9 1.88 9 = ๐‘ฅ= Simplify if possible. = =

17 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. 0. 5 = = 1๐‘ฅ= 0.4545โ€ฆ ร— 100 100๐‘ฅ= 45.45โ€ฆ = 0.4 6 = Subtract 1๐‘ฅ 99๐‘ฅ= 45 รท 99 45 99 ๐‘ฅ= = = Simplify if possible. = 5 11

18 DEMO Converting Recurring Decimals to Fractions YOUR TURN Convert this decimal to a fraction. 0. 5 = 5 9 = 23 99 1๐‘ฅ= 0.4545โ€ฆ ร— 100 100๐‘ฅ= 45.45โ€ฆ = 0.4 6 = 7 15 Subtract 1๐‘ฅ 99๐‘ฅ= 45 รท 99 45 99 ๐‘ฅ= = 1 22 = 92 33 Simplify if possible. = 5 11

19 tom@goteachmaths.co.uk Questions? Comments? Suggestions?
โ€ฆor have you found a mistake!? Any feedback would be appreciated ๏Š. Please feel free to


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