add and sub with multiples of 10 Flashcards
1
Q
40 + 30
A
70
2
Q
10 + 80
A
90
3
Q
70 + 30
A
100
4
Q
60 + 60
A
120
5
Q
60 - 20
A
40
6
Q
90 - 80
A
10
7
Q
100 - 20
A
80
8
Q
130 - 30
A
100
9
Q
50 + 90
A
140
10
Q
170 - 80
A
90
11
Q
200 - 50
A
150
12
Q
70 + 40
A
110
13
Q
90 + 110
A
200
14
Q
140 - 60
A
80
15
Q
190 - 70
A
120
