1-5 乘法口算一68-11=78-15=69-18=19+15=50+16=29+30=98-44=12+64=76+14=65+19=21+5=100-56=29+67=34-16=36+49=39-23=95-83=45+13=82+13=17+43=3x1=2x5=8x2=2x4=5x1=1x7=5x2=2x9=0x1=9x2=1x8=1x9=1x6=2x7=3x2=2x9=8x1=8x2=2x3=2x4=4x2=0x7=4x0=4x9=5x1=5x2=2x3=2x4=2x6=7x2=1-5 乘法口算13+55=93-38=91-37=59-54=73+23=78-57=68-11=78-15=69-18=19+15=50+16=29+30=98-44=12+64=76+14=65+19=21+5=100-56=29+67=34-16=3x1=5x3=4x3=3x4=2x5=3x10=3x5=5x3=5x3=3x2=3x3=3x4=6x3=7x3=8x3=9x3=6x1=6x2=6x3=6x0=2x6=1x7=3x8=3x9=10x1=7x2=7x3=0x4=3x6=3x7=36+49=82+13=91-37=24-18=57+19=3x6=10x3=4x3=9x3+5=6x3-9=6x1+1=3x10-11=8x2+15=39-23=17+43=59-54=95-26=71-17=7x3=3x5=3x7=3x7-2=3x5-7=6x2-5=3x7-95-83=13+55=73+23=68-44=33+67=3x8=3x4=45+13=93-38=78-57=84-16=39+29=3x9=5x3=3x9=1x9+5=1-5 乘法口算三4x6-6=9x4+2=1-5 乘法口算四39+35=54+46=90-29=22+38=52-11=89-42=27-14=33-19=15+42=23-29=50-24=32+14=93-40-35=63+13-25=18+79=48-18+5=43+23+20=53+11-44=15+4+6=8+33-5=6x4=4x7=4x8=6x4=9x4=4x2=9x3=4x4=4x6=4x7=4x8=4x9=5x1=5x2=5x3=5x4=8x4=3x7=8x2=2x9=4x1-4=7x2-6=7x3+4=7x4+6=5x4-10=4x7+5=4x8+6=4x9-6=6x1+7=6x3-13=1-5 乘法口算五61+27=68-26=12+76=28-22=42+49=69-30=92-2=67-56=20+59=47+22=86+12=55-15=91-61+36=24+76-50=17+6-5=24+24+9=77+5+11=6+83-61=9x5=5x2=5x3=5x4=6x5=8x5=8x4=3x9=5x1=7x5=7x3=7x4=5x6=10x5=4x8=5x9=5x6=5x7=5x8=4x6=9x5=5x8=6x5=7x5=5x5-6=9x5+4=8x5-3=5x6+151-5 乘法口算六2+73=35+38=100-10=19+49=58+28=48-16=98-11=79+18=87-50+34=7+77+12=90-50-20=15+8+70=6+86-17=52+7-48=3x6=3x7=3x8=3x9=8x1=8x2=8x3=8x4=9x5=5x7=6x4=4x9=9x2=9x3=9x4=7x2=7x3=7x4=5x5=4x5=8x5=4x7=8x2=5x2=7x4+1=3x7-6=5x8-21=9x5+6=2x5+8=3x10-9=3x5-5=6x4-8=5x6-7=5x7-15=5x8+2=3x9-7=1-5 乘法口算七26+41-37=81-62+5396-49 +18=27+57 -220+76 -74=40+20 -1231+ 46 -27=70-30+4774+ 23 -96=88-56 +442x7=2x8=3x3=1x5=9x4=3x5=6x5=9x4=4x5=5x5=3x8=5x7=2x4=5x9=7x4=4x4=9x3=2x3=8x2=3x4=5x1=2x9=3x4=8x4=3x7=6x2=3x9=2x1=5x8=3x2=6x3=4x4=1-5 乘法口算八94- 41+14=39-5+35=79- 29 + 48=75+16-72=94-2 +5=51-47+9146-7 + 31=55 -11+23=88- 59 + 63=36 -35+61=48+ 34-42=89-72+54=3x8=3x2=2x2=...
