MULTIPLICATION
Problems
|
Strategies
|
Answer
|
1.37 x 9=
|
37 x 9=
40 x 9=360
3 x 9=27
360 - 27=
360 - 20=340
340 - 7=333
|
333
|
2.47 x 15=
|
47 x 15=
50 x 15=750
3 x 15=45
750 - 45=
750 - 40=710
710 - 5=705
|
705
|
3.65 x 7=
|
65 x 7=
70 x 7=490
5 x 7=35
490 - 35=
490 - 30=460
460 - 5=455
|
455
|
4.81 x 9=
|
81 x 9=
90 x 9=810
9 x 9=81
810 - 81=
810 - 80=730
730 - 1=729
|
729
|
5.72 x 17=
|
72 x 17=
80 x 17=1360
8 x 17=136
1360 - 136=
1360 - 130=1230
1230 - 6=1224
|
1224
|
6.39 x 12=
|
39 x 12=
40 x 12=480
1 x 12=12
480 - 12=
480 - 10=470
470 - 2=468
|
468
|
7.187 x 9=
|
187 x 9=
190 x 9=1710
3 x 9=27
1710 - 27=
1710 - 20=1690
1690 - 7=1683
|
1683
|
8.77 x 33=
|
77 x 33=
80 x 33=2640
3 x 33=99
2640 - 99=
2640 - 90=2550
2550 - 9=2541
|
2541
|
No comments:
Post a Comment
Note: only a member of this blog may post a comment.