甲数的和乙数相等,那么甲数比乙数大. .
3÷﹣÷3.
18×+12×0.25+10×25%
+6.28+﹣4.28.
神机妙算细又巧!(写出简算过程)×9+ (+)×15×17 ×12﹣÷ ×+×+.
×3.6+×0.75.