Doubles
4+4=
8
7+3=
10
9-6=
3
6+4=
10
15+15=
30
33+33=
66
25+6=
31
46-8=
38
12-9=
12-10= 2
12-9=3
45+45=
90
What is 16 doubled?
32
48+13=
61
98-75=
23
87-8=
87-10=77
87-9= 78
87-8= 79
555+555=
1110
18-9=
9
229+41=
270
354-87=
267
127-19=
127-20=107
127-19=108
150-24=
150-25=125
150-24=126
120 divided by 2
60
1234+567
1801
9874-563=
9311
574-47=
574-50=524
574-47=527
500 divided by 5
100