精品文档---下载后可任意编辑计算下面各题: (1–16 ×25 )÷7917 ÷23 ×725÷(78 –56 ) 815 +23 –341112 –(19 +512 ) 425 ×34 –150 (56 –34 )÷(23 +49 ) 15 ×[13 ÷(12 +56 )] 12÷(1–37 ) [(1–16 ×25 )÷79 [(1–35 )×25 ]÷4用简便方法计算: (15 –17 )×70 97×59635 ×8+35 ×215×37 +15×47 (89 +34 –23 )×72 72×(12 –13 +14 )(59 +113 )×9+413 30×(12 –13 +16 )4–25 ÷815 –14 48×(13 –12 +14 )(35 +14 )×60–27 625 ÷9+625 ×89 24×(16 +18 ) 5–16 –5689 ×(9+34 )–2378 ÷23 +78 ×12 5–16 –5645 +58 ÷14 +12 2–89 ×34 –1378 +23 ÷45 +1630×(16 +25 –12 ) 10÷101011 +24112 ÷12 45 ×13 ×13 +1÷34直接写出得数。÷0.125= 555×13-111×15= 25××0.25= 125-25+75= 999×15= 10-3.25+9÷0.3= ÷0.125=55×(133 -144 )= 20032004 ×2024= 10713 -(414 +3713 )-0.75=解方程:12×(12 –13 +14 ) 15 +49 ×38 +56518 +X = 1112 2X–19 = 89 X+35 = 7103X–×2=1.1 X+23 –12 =1718 –3x = 1.75 1225 X = 15×35 X×(16 +38 )= 1312 (1–59 )X = 815X×(1+14 )= 25 X×27 = 821 15÷X = 56X×45 ×18 = 10 X×23 = 8×34 X×34 ×25 = 18 X×910 = 24×18 X×13 ×35 = 4 X×27 = 18×13X3 = 10 7X–4X = 21 14 ×x+15 ×45 = 12X+14 x = 20 51-4.5=(51-10X)×3 3X-2×(10-X)=15 (1-X)÷3=2-X X÷25+X÷5=X-19简便计算:25×37× 75××4 125×39×16 41×35×2 101×99-897 136××64×123+877× 102××2 471××71 43×126-86×1357×23÷13421 ×95÷127(113- 56)÷17558÷53 + 35×3848¿(18+16)4¿53¿920310¿(57−1021)×+÷解方程:精品文档---下载后可任意编辑13 χ÷5 = 1335 ÷χ = 67 X – 60% X =18 χ = ×8=95 40%X+30=804χ+12 χ= 9 58 χ-35 = 25计算:3--×+×χ=χ×(+)=25×÷× 13.09-8.12-4.88 12×103-4500÷75 ×[÷(×)] (+)×15×÷×4解方程:x-=×30% 6:x=:14 ×x+15 ×45 = 12X×13 ×35 = 4 计算:[1–(14 +38 )]÷1819 –512 ×45 ÷3(1...