Math Problems

Math Problems

Problems	Strategies	Answers
28 x 9	20 x 9 = 180 8 x 9 = 72 180 + 72 =252	252
59 x 15	50 x 15 = 1000 9 x 15 = 145 1000 + 145 = 1045	1045
43 x 7	40 x 7 = 230 3 x 7 = 21 21 + 230 = 251	251
81 x 9	80 x 9 = 640 1 x 9 = 9 640 + 9 = 649	649
62 x 17	60 x 17 = 1020 2 x 17 = 44 1020 + 44 = 1044	1044
39 x 15	30 x 15 = 450 9 x 15 = 135 135 + 450 = 585	585
87 x 9	80 x 9 =  720 7 x 9 = 63 720 +63 = 783	783
67 x 33	60 x 33 = 1980 7 x 33 = 231 1980 + 231 = 2211	2211
63 x 7	60 x 7 = 420 3 x 7 = 21 420 x 21 = 441	441
75 x 9	70 x 9 = 630 5 x 9 = 45 630 + 45 = 685	685
55 x 10	50 x 10 = 500 5 x 10 = 50 500 + 50 = 550	550
92 x 9	90 x 9 = 810 2 x 9 = 18 810 + 18 = 828	828
53 x 8	50 x 8 = 400 3 x 8 = 24 400 + 24 = 424	424
92 x 5	90 x 5 = 450 2 x 5 = 10 450 + 10 = 460	460
41 x 9	40 x 9 = 360 1 x 9 = 9 360 + 9 = 369	369
72 x 7	70 x 7 = 490 2 x 7 = 14 490 + 14 = 504	504
32 x 11	32 x 11 = 352 3 + 2 = 5	352
Done	Done	Done