乘加乘减的口算练习（二年级上册）16-2x7=91+85-26=2x2x2=2x9x8=3x8x8=2〜1-0=50+2x8=14+11-25=9x5x5=90-81+2=85-83-1=8x6+79=6〜2-2=96-2x4=52-1x5=4x24^4=19+6x6=5x6+82=1x3+63=77+66-49=5x70〜10=25〜5x9=20〜5+37=63-16+16=4+7x7=80+5x7=51-30+5=9x40〜10=45+91+29=72-25〜5=7x5x0=60〜6+29=4x...

时间:2025-03-30 00:35栏目:行业资料