Mental Math Addition
25 + 10
35
43 x 2
86
764 x 0
0
What do you do when it says take away?
subtract
20 x 2
40
14 + 20
34
67 x 5
335
4,561 x 1
4,561
What do you do when a problem has the word every in it?
Multiply
10 x 10
100
25 + 20
45
24 x 3
72
8 x 2
16
What do you do when a problem says difference?
subtract
20 x 3
60
25 +15
40
65 x 3
195
5 x 9
45
What do you do when a problem says product of?
Multiply
40 x 2
80
45 + 45
90
39 x 4
156
8 x 3
24
What do you do when a problem says goes into?
Divide
60 x 2
120