5th grade mental math iv
TRANSCRIPT
Two Digit by One Digit Multiplication II
5th Grade Mental Math
70 x 7
490
30 x 7
210
50 x 8
400
20 x 5
100
40 x 7
280
80 x 9
720
60 x 8
480
30 x 9
270
90 x 7
630
70 x 6
420
32 x 4
30 x 4 is 120and 2 x 4 is 8
and 120 + 8 gives a sum of 128
54 x 2
50 x 2 is 100and 4 x 2 is 8
and 100 + 8 gives a sum of 108
91 x 3
90 x 3 is 270and 1 x 3 is 3
and 270 + 3 gives a sum of 273
28 x 5
20 x 5 is 100and 8 x 5 is 40
and 100 + 40 gives a sum of 140
63 x 5
60 x 5 is 300and 3 x 5 is 15
and 300 + 15 gives a sum of 315
77 x 2
70 x 2 is 140and 7 x 2 is 14
and 140 + 14 gives a sum of 154
86 x 4
80 x 4 is 320and 6 x 4 is 24
and 320 + 24 gives a sum of 344
36 x 5
30 x 5 is 150and 6 x 5 is 30
and 150 + 30 gives a sum of 180
41 x 8
40 x 8 is 320and 1 x 8 is 8
and 320 + 8 gives a sum of 328
39 x 4
30 x 4 is 120and 9 x 4 is 36
and 120 + 36 gives a sum of 156
25 x 8
20 x 8 is 160and 5 x 8 is 40
and 160 + 40 gives a sum of 200
66 x 7
60 x 7 is 420and 6 x 7 is 42
and 420 + 42 gives a sum of 462
96 x 3
90 x 3 is 270and 6 x 3 is 18
and 270 + 18 gives a sum of 288
47 x 4
40 x 4 is 160and 7 x 4 is 28
and 160 + 28 gives a sum of 188
21 x 8
20 x 8 is 160and 1 x 8 is 8
and 160 + 8 gives a sum of 168
74 x 5
70 x 5 is 350and 4 x 5 is 20
and 350 + 20 gives a sum of 370
58 x 6
50 x 6 is 300and 8 x 6 is 48
and 300 + 48 gives a sum of 348
38 x 7
30 x 7 is 210and 8 x 7 is 56
and 210 + 56 gives a sum of 266
64 x 9
60 x 9 is 540and 4 x 9 is 36
and 540 + 36 gives a sum of 576
96 x 8
90 x 8 is 720and 6 x 8 is 48
and 720 + 48 gives a sum of 768
Two Digit by One Digit Multiplication II
5th Grade Mental Math