90:30=3
350-3=347
60:20=3
590+3=593
40:20=2
50:10=5
2+5=7
70:10=7
48:8=6
7-6=1
80×7=560
60:3=20
560-20=540
80:20=4
30×2=60
4+60=64
90:30=3
350-3=347
60:20=3
590+3=593
40:20=2
50:10=5
2+5=7
70:10=7
48:8=6
7-6=1
80×7=560
60:3=20
560-20=540
80:20=4
30×2=60
4+60=64