5X5+()=4438+7X()=94第一天54+23=76-43=85+23=67-15=68+45=87-38=57+23=66-19=59+26=75-46=3X4=5X6=4X9=6X8=7X9=3X8=4X5=5X7=8X3=1x4=96-6x8二43+26-17=36+48-25=25+4X6=45-6X4=6X7+28=9X7-45=30-10X2=95-7X8=23+6X8=32+()=71()-3X5=153X8-()=12()-43=2852+8-()=204X7+)=6467-4X()=513X4+()=3778+2X()=84()+25=78第二天1、90-68=44+35=33+59=52+28=81-69=29+64=49+29=42-38=67-32=83-51=2、2x3=5x7=9x2=3x5=4x7=9x3=2x7=1x1=5x8=8x3=3、98-32+40=46+5-20=50-10X3=9X8+8=6X7-12=87-7X8=55+5X6=65-24+25=34-4X5=49-7X7=4、()-26=55()+4X5=4746-()=238X2+()=423X7-()=1155+()=996X7-()=15()+28=96(1)47+15=(3)26-14=(5)28+69=(7)50-30=(9)44+47=1)83-49=2)35+18=8X4=7X6=5X9=3X6=2X8=3X9=3填()计算72+()X7=1003X8-()=1252+8-()=2067-3X()=5168-2X()=564两步计算6x6-32=38-3x7=8x5+45=9x2-10=52-4x9=7x0+31=第四天第三天1、两位数加减法(2)34-13=(4)57+36=6)27-20=(8)38+17=10)34-17=7X8=5X9=8X4二6x