12 - 5 = | 19 - 7 = | 41 - 8 = | 17 + 8 = |
34 + 6 = | 41 + 30= | 25 - 9 = | 31 - 5 = |
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15 | 10 | 7 |
( )?
43+28-36= 92-45-28= 82-(7+38)=
30+5= | 14-6= | 7+8= | 12-5= |
57-30= | 16-9= | 6+5= | 17-8= |
27+30= | 47-30= | 16+23= | 26-14= |
2×5= | 4×5= | 6×3= | 6×5= |
5×3= | 3×3= | 2×4= | 4×3= |
2×6-12= | 5×3+8= | 4×5-7= | 5×5+5= |