Two Digit by One Digit Multiplication I
5th Grade Mental Math
20 x 3 is 60and 3 x 3 is 9
and 60 + 9 gives a sum of 69
40 x 7 is 280and 7 x 1 is 7
and 280 + 7 gives a sum of 287
70 x 2 is 140and 2 x 2 is 4
and 140 + 4 gives a sum of 144
50 x 4 is 200and 4 x 4 is 16
and 200 + 16 gives a sum of 216
20 x 3 is 60and 6 x 3 is 18
and 60 + 18 gives a sum of 78
30 x 4 is 120and 2 x 4 is 8
and 120 + 8 gives a sum of 128
80 x 2 is 160and 3 x 2 is 6
and 160 + 6 gives a sum of 166
70 x 4 is 280and 5 x 4 is 20
and 280 + 20 gives a sum of 300
90 x 6 is 540and 1 x 6 is 6
and 540 + 6 gives a sum of 546
30 x 5 is 150and 3 x 5 is 15
and 150 + 15 gives a sum of 165
20 x 7 is 140and 2 x 7 is 14
and 140 + 14 gives a sum of 154
40 x 2 is 80and 4 x 2 is 8
and 80 + 8 gives a sum of 88
50 x 3 is 150and 2 x 3 is 6
and 150 + 6 gives a sum of 156
60 x 4 is 240and 5 x 4 is 20
and 240 + 20 gives a sum of 260
70 x 8 is 560and 1 x 8 is 8
and 560 + 8 gives a sum of 568
90 x 2 is 180and 3 x 2 is 6
and 180 + 6 gives a sum of 186
40 x 2 is 80and 7 x 2 is 14
and 80 + 14 gives a sum of 94
20 x 3 is 60and 9 x 3 is 27
and 60 + 27 gives a sum of 87
60 x 4 is 240and 8 x 4 is 32
and 240 + 32 gives a sum of 272
30 x 6 is 180and 1 x 6 is 6
and 180 + 6 gives a sum of 186
Two Digit by One Digit Multiplication I
5th Grade Mental Math