Addition
20+22
42
100-15
85
5x5
25
49/7
7
5x+5=25
x=4
100+23+350
473
30-24-3-2.5
0.5
30x4
120
100/5
20
5x+6=36
x=6
4+3+27+36+108
178
400-300-24-2-7-18
49
45x19
855
500/50
10
10x-10=90
x=10
43.7+56.3
100
915-15-230-450-20-15
185
3x4x6x8
576
1,000/100
10
12x+12=156
x=12
1.7+2.5+4.3+9.9
18.4
1,300-450
850
500x10x5
25,000
100/19
5.26
10x+10=20
x=1