proportions
60% of 120
60
-10 * -10
100
what 50% of 100
50
-2+3
1
9 + 10 =
19
20% of 70
14
-9 * 8
-72
20% 100
20
-4+ 8
4
9+9
18
40% of 340
40
-5 * 6
-30
50% of 990
495
-5 + 4
-1
3+3
6
74% of 440
74
-6*4
-24
60% of 20
12
4+-6
-2
2+2
4
80% of 480
384
-6*7
-42
90% of 440
396
-10 + -10
-20
1+1
2