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5×19 3×610 1×41+4
255×5 562+10 3×88×3
14-10= 13-6= 8+8= 77-7= 12-5+7=
9+7= 16-8= 35-5= 16-7= 58-50+30=
2×4= 3×5= 3×6= 2×9=
5×9= 8×2= 5×2= 6×5=
30-25= 100-100= 31+6= 50-20=
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