Mental Adding
20 + 70
90
12-9
3
1.1 + 1.1
2.2
3.5 - 0.5
3.0
a2 + b2 =
c2
35 + 35
70
100-40
60
4.9+6.0
10.9
2.2 - 1.1 =
1.1
what operation do you use to find the product of the problem?
multiplication
43 + 34
77
100-63
37
4.5 + 4.6
9.1
4.9 - 1.4
3.5
if Mr Varela is 6 foot tall, how many inches tall is he?
72
17+17+17
51
3.50 +3.50
7
10.7 -3.8
6.9
1 + 1 - 1 +1 - 1 - 1 +1 - 1 + 1 - 1 +1 -1 -1 +1
0
1+2+3+4+5+6+7+8+9+10
55
55-39
16
45.45 + 45.45
90.90
22.8- 11.4 =
11.4
7