35+24= 70-58= 6+49=
67-25+28= 24+32+17= 85-(40-12)=
4×6=
2×2=
8×3=
6×5=
4×5=
5×3=
5×7=
9×2=
3×2=
4×2=
4+9=
7×4=
是的( )倍
49,42,,28,,14。
1-0.92= - = ×3.2= ÷ ×5=
3.5+4.28= × = ÷ = 99×0.9+0.9=