eg.
+1
72-49=
72-50=22
22+1=23
Start here! (Please show your working!)
+2
1. 63-38= 25
63-40=23
23 + 2 =25
+2
2.74-28=46
74 - 30=44
44+2 = 46
+1
3.92-49=43
92-50 = 42
42 + 1=43
+1
4.75-39=56
75 -40=45
45+1=56
+2
5.133-68=
133-70=33
33+2= 35
+3
6.154-77=
154- 80=27
27+ 3 =30
+1
7.166-59=
166- 60=46
46 +1=47
+2
8.132-68=64
132- 70 =62
62+2=64
+1
9.141-99=
141-100=41
41+1=42
+3
10.123-87=
123-87=36
36 +3=39
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