Percentage – Increase & Decrease – Multiplier – Four in a Row Competing in pairs, students should select a question on the left and calculate an answer. They should attempt to get four answers in a row on the answer grid (using Xs or Os). It may be necessary to set a time limit for students selecting questions!

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’.

540 + 10% 820 − 30% 440 − 70% 340 + 60% 770 + 20% 490 − 5% 360 − 15% 270 + 70% 410 + 65% 620 − 50% 740 − 20% 1120 + 35% 820 + 5% 470 − 80% 560 − 15% 730 + 65% 980 + 40% 620 − 30% 350 − 70% 570 + 45% 180 + 5% 680 − 60% 910 − 10% 480 + 75% 420 + 43% 4 in a Row Choose a question from the left. Find, then mark (X or O) the answer below. The first player to get 4 in a row wins! Answer Grid 544 592 105 1205 466 310 94 594 819 434 189 459 1372 1512 601 476 574 827 306 132 924 272 677 840 861 Questions 1

560 + 16% 440 − 27% 120 − 66% 520 + 73% 660 + 7% 640 − 9% 240 − 81% 280 + 62% 530 + 54% 350 − 34% 880 − 21% 1050 + 83% 360 + 4% 780 − 2% 520 − 53% 960 + 149% 180 + 46% 420 − 28% 520 − 73% 810 + 96% 270 + 161% 690 − 44% 710 − 94% 520 + 24% 290 + 11% 4 in a Row Choose a question from the left. Find, then mark (X or O) the answer below. The first player to get 4 in a row wins! Answer Grid 453.6 42.6 231 2390.4 706.2 764.4 649.6 262.8 40.8 321.9 582.4 704.7 816.2 140.4 374.4 644.8 1921.5 386.4 321.2 695.2 899.6 1587.6 45.6 302.4 244.4 Questions 2

480 + 23% 260 − 14.5% 640 − 45% 890 + 5.5% 430 + 153% 210 − 7% 480 − 24.5% 320 + 4% 880 + 13% 250 − 7.5% 760 − 14% 1120 + 19.5% 560 + 82% 820 − 25.5% 470 − 16.5% 260 + 151% 650 + 20.5% 730 − 92.5% 210 − 18.5% 770 + 73% 280 + 22% 450 − 2.5% 360 − 72% 820 + 9.5% 290 + 16.25% 4 in a Row Choose a question from the left. Find, then mark (X or O) the answer below. The first player to get 4 in a row wins! Answer Grid 171 362 898 352 1332 222 1019 994 55 654 195 653 342 1088 337 611 939 101 392 333 231 783 1338 590 439 Questions 3

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