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1、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=16 =2X7=3X2=2X9=8X1=8X2=2X3=2X4=4X2=0X7=4X0=4X9=5X1=5X2=2X3=2X4=2X6=7X2=1-5 乘法口算二13+55=93-38=91-37=59-54=73+23=78-57=68-1
2、1=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=2 X5 =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=1-5 乘法口算三36+49=39-23=95-83=45+13=82+13=17+43=13+55=93-38=91-37=59-54=73+23=78-57=24-18=95-26=68-
3、44=84-16=57+19=71-17=33+67=39+29=3X6=7X3=3X8=3X9=10X3=3X5=3X4=5X3=4X3=3X7=8X3=3X9=9X3+5 =3X7-2 =3X8+8 =1X9+5 =6X3-9 =3X5-7 =8X3+7=2 X5-6 =6X1+1=6X2-5 =6X3+10=6X0+8 =3X6+8 =3X7-8 =3X8-6 =3X9-10=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
4、=18 + 7 - 948- 18 + 5 =43 + 23 + 20 =53 +11 - 44 =15 + 4 + 6 =8+ 33 - 5 =6M=4X7=4X8=6X4=9M =4X2=9X3=4X4=46 =4X7=4X8=4X9=5X1 =5X2=5X3=5X4=8M=3X7 =8X2=2X9=4X1-4 =7X2-6 =7X3+4=7X4+6=5X4-10 =4X7+5=4X8+6 =4X9-6 =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
5、=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+15=6X1+7 =6 X3-13 =1-5 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
6、=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=3X10-93X5-5 =6X4-8 =5 0-7 =5 乂7-15=5X8+2 =3X9-7 =1-5 乘法口算七26 + 4137 =81 - 62 + 53 =96 - 49 + 18二27 + 57 -2=20 + 7674二40 + 20 - 12 =31
7、 + 4627二70 - 30 + 47 =74 + 2396二88 - 56 + 44 =2 X7=2 X8=3X3=1X5=9M=3X5=6X5=9X4=4X5=5X5=3X8=5X7=2 X4=5X9=7X4=4X4=9X3=2X3=8X2=3X4=5 X1=2X9=3X4=8X4=3X7=6X2=3X9=2X1=5 X8=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 + 91 =46 - 7 + 31 =55 - 11 + 23 =88
8、- 59 + 63 =36 - 35 + 61 =48 + 34 - 42 =89 - 72 + 54 =3X8=3X2=2X2=4X3=6X5=4X8=9X4=2X9=7X3=8X3=9X3=6X3=5X2=4X3=8X4=5X4=5X4=9X5=4X2=7X5=8X4=5X5=9X3=9X2=8X4=2X4=3X4=4X5=5X3-2=4X6+5=8X3-7=3X8-5=4X7+5=5X6-7=4X9+2=4X9-6=1-5 乘法口算九24-18=95-26=68-44=84-16=57+19=71-17=33+67=39+29=21 + 62 -18 =64- 33 + 36 =90 -
9、 65 + 56 =92- 86 + 56 =36 - 24 + 84 =59+ 20 - 57 =3 + 28- 31=73 -57 + 75 =3X3=3 X5=6X4=7X4=5X3=2X5=7X3=3 X9=4X2=2X3=4X4=7X2=2X2=9X2=9X2=8X3=3X8=3 X2=9X3=6X3=5X2=4X3=8X2=4X4=4X7=5X6=4X9=4X1=8X5+7=2X6-8=9X1+5=9X3+4=7X3-6=4 X8-9=1-5 乘法口算十39+35=54+46=90-29=52-11=89-42=27-14=44-28=58-8=48+10=94 - 81 + 60
10、 =74 - 72 + 94 =85 +3 - 67=1 + 40- 18 =2 + 13 -7 =31 + 37- 32 =37 -9 + 60=98 - 80 + 80 =2X7=2X8=3 X3=9X4=2X5=3 X5=3 X4=9X4=7X4=5 X3=9X4=3 X4=5X1=2X9=5 X5=4X9=3X7=6X2=3 X9=2 X1=5X8=3 X2=3 X9=6X4=7X3-4=8X3+8=2X2+5=22+38=33-19=83-31=4X3-7=6 X0+5=4X4+7=1-5 乘法口算十4X5=5X5=3X8=5X7=2X4=59=7X3=2X2=4X3=6X5=4X4
11、=8X3=5X5=3X8=5X7=8X2=4X8=2X3=7X5=8X4=5X5=4X5=2X4=5X9=3X7=6X2=3X9=2X9=5X8=3X2=3X8=3X2=9X3=6X3=5X2=4X3=5X6=4X9=4X9=8X5=2X6-4=4X7+5=9X2-7=9X5+8=4X2-2=3X6+8=2X5-6=5X4+4=2 乂7-7=2X8+3=1-5 乘法口算十二7X4=5 X3=9X4=3 X4=5 X9=2X9=9X4=2X4=3 X4=4X5=5X3=4X6=3 X5=6X4=8X3=5X2=8X2=3 X3=4X2=2X3=4X4=7X2=2X2=5 X4=5X3=3X7=2X3=6X4=2X5=5 X4=2X7=2X8=3 X3=7X5=9X4=3X5=4X5=5 X5=3 X8=5X7=2X4-7=5X9+5=3 X8+8=2 X5+4=2X2-1=4X3-5=6X5+6=4X4-14=9X2-15=7X3-20=
