Percentage Multiplier Card Sort Students need to decide

Percentage Multiplier – Card Sort Students need to decide the total multiplier value of each card (with or without a calculator) and place them in ascending order. Students could number cards instead of cutting them out. The cards are in 3 sizes.

Printing To print handouts from slides Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

How do we calculate multiple percent-changes? Imagine you had £ 100 before the changes on each card.

Put the cards in ascending order according to their final value (smallest to biggest). A B 50% increase then, 20% decrease 1. 2 64% increase 1. 64 E C F 40% increase then, − 40% 0. 84 D 40% appreciation after a 30% depreciation 0. 98 G 10% down then, 80% up 1. 62 H 3 times a 50% decrease − 38% increase 0. 125 0. 62 30% loss then, 10% loss 0. 63 Half Answers

Put the cards in ascending order according to their final value (smallest to biggest). A 15 B 64% increase E I M 9, 8 40% increase then, − 40% F 1 J 3 times a 50% increase C 2 G 3 times a 50% decrease 200% increase then, 100% decline 16 12 50% increase then, 20% decrease N 13 150% appreciation then, 50% decline 9, 8 40% decrease followed by, 40% increase 10 40% appreciation after a 30% depreciation D 4 H 14 6, 5 − 38% increase K O 6, 5 10% drop then, 30% drop L 7 P 50% profit followed by, 50% loss 10% down then, 80% up 3 30% loss then, 10% loss 40% gain before a 60% loss 11 80% decrease followed by, 500% increase

Put the cards in ascending order according to their final value (smallest to biggest). A B 15 64% increase 1. 64 E I M 9, 8 40% increase then, − 40% 0. 84 F 1 J 200% increase then, 100% decline 0 N 16 3 times a 50% increase 3. 375 12 50% increase then, 20% decrease 1. 2 C 2 G 10 40% appreciation after a 30% depreciation 0. 98 D 4 H 3 times a 50% decrease − 38% increase 0. 125 0. 62 13 150% appreciation then, 50% decline 1. 25 9, 8 40% decrease followed by, 40% increase 0. 84 K O 6, 5 10% drop then, 30% drop 0. 63 L 7 P 50% profit followed by, 50% loss 0. 75 14 10% down then, 80% up 1. 62 6, 5 3 30% loss then, 10% loss 0. 63 40% gain before a 60% loss 0. 56 11 80% decrease followed by, 500% increase 1

Put the cards in ascending order according to their final value (smallest to biggest). A B 50% increase then, 20% decrease 64% increase E C F 40% increase then, − 40% I 3 times a 50% decrease 200% increase then, 100% decline M 30% loss then, 10% loss − 38% increase 150% appreciation then, 50% decline L 10% drop then, 30% drop O 40% decrease followed by, 40% increase 10% down then, 80% up H K N 3 times a 50% increase 40% appreciation after a 30% depreciation G J D 40% gain before a 60% loss P 50% profit followed by, 50% loss 80% decrease followed by, 500% increase

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