文档介绍：-
. 优选-
370÷7= 784-685= 76×15＝486÷2= 607÷5= 900-807= 915÷3=560÷4=
458+542= 423÷3= 87×19= 362÷6= 525÷3＝ 254÷5＝ 192÷4＝ 51×16 ＝
602÷7＝ 839÷9＝ 726÷6＝78×22＝ 416÷4＝ 823÷8＝63×43=
367÷4= 795÷5= 2×53= 79×97= 28×32＝ 54×25 ＝ 48×61＝ 39×42 ＝
168÷8= 370÷5= 640÷7= 19×64= 470÷9= 522÷6= 312÷7= 570÷8=
810÷9= 660÷5= 804÷7= 462÷3＝780÷4＝ 729÷9＝ 624÷6＝ 2500+300＝
156-97= 386+479= 321×12＝ 125×23＝ 18×250＝ 52×49= 34×54= 106×51＝
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. 优选-
25+32×23 52+18×12 17+34×19 37+16×28 65+11×12 56+37×21 61+12×23
= = = = = = =
= = = = = = =
43+21×23 45+32×55 38+25×31 48+52×21 87+35×49 44+81×33 31+98×76
= = = = = = =
= = = = = = =
99+46×97 38+53×47 67+81×90 99+54×56 56+56×76 190+18×11 41+51×87
= = = = = = =
= = = = = = =
96+72×44 98+55×67 37+43×77 32+58×86 25+67×22 44+88×22 99+65×34
= = = = = = =
= = = = = = =
56+89×77 35+49×82 47+99×89 58+85×33 49+65×33 79+92×93 89+78×46
= =