Practice
Find the sum.a) 2
+2
4
+2
4
b) 6
+3
9
+3
9
c) 4
+1
5
+1
5
d) 8
+9
17
+9
17
e) 3
+6
9
+6
9
f) 2
+1
3
+1
3
g) 3
+5
8
+5
8
h) 6
+6
12
+6
12
i) 3
+7
10
+7
10
j) 2
+1
3
+1
3