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2×5= 1×4= 3×4= 2×3=
3×3= 2×4= 3×5= 4×5=
86-6= 30+45= 70-40= 39+8=
18﹣2= +7=17 14+4=
15+4= 18﹣=4 ﹣5=12
2010 1619 16﹣412
10+617 19﹣810+3 17+218﹣2
52+20= 62-4= 56 -30= 27+5=
76-30= 9+25 = 46-8= 90+4=
31+5= 6+30= 60-1= 64-50=
46+23= 67-20= 73-23=
42-12= 45-25= 93-40=
83-3= 36+12= 45+30=
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