Tuesday 05-02-2019
Problem
|
Strategy
|
Answer
|
|
13x5=
10x5=50
3x5=15
50+15=
|
65
|
2.19x6=
|
19x6=
9x6=54
10x6=60
54+60=
|
114
|
3.15x7=
|
15x7=
10x7=70
5x7=35
70+35=
|
105
|
4.18x6=
|
18x6=
10x6=60
8x6=48
48+60=
|
108
|
5.14x9=
|
14x9=
10x9=90
4x9=36
90+36=
|
126
|
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