Write the number that you hear?
2
+4
7
+3
9
+2
8
5
1
4 + 3 =____
16+3=____
6+7=_____
37
40
+10
52
+33
-2
10
-4
9-5=____
15-5=____
8-_____=4
11
-7
12
-3
35
86-15=