Ratio Reverse Demonstration This resource provides animated demonstrations

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Ratio – Reverse – Demonstration This resource provides animated demonstrations of the mathematical method.

Ratio – Reverse – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.

Sam and Sal shared some fries in the ratio 3 : 4 Sam got

Sam and Sal shared some fries in the ratio 3 : 4 Sam got 21 fries. How many did Sal get? Draw a Bar Model to calculate how much one part is worth. 21 Sam Sal 7 7 7 Sal 28 £ 21 ÷ 3 = 7 fries per part 7 7 28 Sam

Sam and Sal shared some fries in the ratio 7 : 3 Sal got

Sam and Sal shared some fries in the ratio 7 : 3 Sal got 15 fries. How many did Sam get? Draw a Bar Model to calculate how much one part is worth. Sam Sal 35 35 Sam Sal 5 5 5 5 5 15 15 ÷ 3 = 5 fries per part ①

Jess and John shared some marbles in the ratio 3 : 4 John got

Jess and John shared some marbles in the ratio 3 : 4 John got 12 marbles. How many marbles were there in total? Jess John 9 12 Draw a Bar Model to calculate how much one part is worth. 9 Jess John = 21 marbles in total 3 3 3 3 12 12 ÷ 4 = 3 marbles per part

Jess and John shared some marbles in the ratio 7 : 5 Jess got

Jess and John shared some marbles in the ratio 7 : 5 Jess got 35 marbles. How many marbles were there in total? Jess John 35 25 Draw a Bar Model to calculate how much one part is worth. 35 = 60 marbles in total Jess 5 5 5 5 John 5 5 5 25 35 ÷ 7 = 5 marbles per part ②

Josh and Jack the bandits stole some money from the bank! They divided it

Josh and Jack the bandits stole some money from the bank! They divided it in the ratio 2 : 3 and Jack got £ 4 more than Josh. How much did they each get? Josh Jack Draw a Bar Model to calculate how much one part is worth. £ 8 Josh £ 8 4 4 Jack £ 4 4 £ 12

Josh and Jack the bandits stole some money from the bank! They divided it

Josh and Jack the bandits stole some money from the bank! They divided it in the ratio 2 : 5 and Jack got £ 15 more than Josh. How much did they each get? Josh Jack Draw a Bar Model to calculate how much one part is worth. £ 10 Josh £ 10 £ 15 5 5 Jack £ 25 5 5 £ 25 £ 15 ÷ 3 = £ 5 per part ③

Anna and Andy shared some sweets in the ratio 3 : 7 Andy got

Anna and Andy shared some sweets in the ratio 3 : 7 Andy got 16 more than Anna. How many sweets were there in total? Anna Andy 12 28 Draw a Bar Model to calculate how much one part is worth. 12 = 40 sweets in total 16 Anna 4 4 4 Andy 4 4 4 4 28 16 ÷ 4 = 4 per part

Anna and Andy shared some sweets in the ratio 5 : 3 Anna got

Anna and Andy shared some sweets in the ratio 5 : 3 Anna got 12 more than Andy. How many sweets were there in total? Anna Andy 30 18 Draw a Bar Model to calculate how much one part is worth. 30 = 48 sweets in total Anna 6 6 6 Andy 6 6 6 18 12 ÷ 2 = 6 per part 12 ④

example Sam and Sal shared some fries in the ratio 3 : 4 Sam

example Sam and Sal shared some fries in the ratio 3 : 4 Sam got 21 fries. How many did Sal get? Sam got 21. Sal got 28. 1) Jack and Josh shared some sweets in the ratio 2 : 3 Jack got 18. How many sweets did Josh get? 2) Jim and Jane shared some money in the ratio 2 : 5 Jane got £ 35. How much money was there in total? 3) Tim and Tom shared some fries in the ratio 7 : 3 Tim got 20 more fries than Tom. How many fries did Tom get?

example Sam and Sal shared some fries in the ratio 3 : 4 Sam

example Sam and Sal shared some fries in the ratio 3 : 4 Sam got 21 fries. How many did Sal get? Sam got 21. Sal got 28. Answers Josh got 27. 1) Jack and Josh shared some sweets in the ratio 2 : 3 Jack got 18. How many sweets did Josh get? Jim got £ 14. £ 49 in total. 2) Jim and Jane shared some money in the ratio 2 : 5 Jane got £ 35. How much money was there in total? Tim got 35. Tom got 15. 3) Tim and Tom shared some fries in the ratio 7 : 3 Tim got 20 more fries than Tom. How many fries did Tom get?

example Anna and Andy shared some sweets in the ratio 3 : 7 Andy

example Anna and Andy shared some sweets in the ratio 3 : 7 Andy got 16 more than Anna. How many sweets were there in total? There were 40 sweets in total. 1) Jack and Josh shared some sweets in the ratio 4 : 7 Josh got 18 more sweets than Jack. How many sweets were there in total? 2) Jim and Jane shared some money in the ratio 3 : 10 Jane got £ 25. How much less did Jim get? 3) May, Max and Mary shared some fries in the ratio 2 : 7 : 3 Together, May and Max got 30 more fries than Mary. How many fires were there in total?

example Anna and Andy shared some sweets in the ratio 3 : 7 Andy

example Anna and Andy shared some sweets in the ratio 3 : 7 Andy got 16 more than Anna. How many sweets were there in total? Answers There were 40 sweets in total. 66 sweets 1) Jack and Josh shared some sweets in the ratio 4 : 7 Josh got 18 more sweets than Jack. How many sweets were there in total? £ 17. 50 less 2) Jim and Jane shared some money in the ratio 3 : 10 Jane got £ 25. How much less did Jim get? 10 : 35 : 15 60 fries in total 3) May, Max and Matt shared some fries in the ratio 2 : 7 : 3 Together, May and Max got 30 more fries than Mary. How many fries were there in total?

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk