资源描述
- = - = + = + = -=
- = + = + = + 2 = 1 - =
+= += += -= -=
-= += -= 1- = -=
-= += -= += +=
+= += -= += -=
+= -= += += -=
+= -= 7-= + = -=
+=
+= += -= 5-=
+= -= -= 5- = 1--=
+ = + = 2 + = -0.25= +=
+ = + = + = += -=
0.74+ = 0.375+
-= += 1-= += +=
+ =
1-= -= + = - = - =
+ = 1 - = + = - = +=
+= += += 1-= -=
- = + = + = + =
+= -= -=
-= += -= 1-= +=
-= += +5= 5-=
0.32= 12.5×8= 8÷0.4= 2.5×4= 7-6.38=
36÷0.9 = 5÷0.001 = 13×60 = 0.8÷0.02 = 0.36+1.54=
135÷5= 0.6×2= 4.8÷0.6= 1.7+3= 0.7÷3.5=
1.25×16= 9.6÷32= 2-0.09= 26.26÷26= 4.57+6.43=
5÷0.001= 2.5×4= 0.48÷120= 1.01×99= 4.3-1.6=
0.9×7= 0.6+7= 0.22×0.5= 1.25×8= 0.9×100=
0.64÷16= 10-9.12= 0.8×125= 3.2+1.78=
四、计算下面各题,能简算的要简算。
8.5-0.24-1.76 7.9×11-7.9 3.14×32
7.5-(2.5+3.8) 5×1.4 - 0.4×5 0.8×125-10
10-4.8-3.2 7.8×1.17-7.8×0.17 2.65×1.7+1.35×1.7
2.7×2-0.45 0.25×101 3.25×27+73×3.25
38.7-7.84÷1.4 8.8-2.5×1.8 4×9×0.25
1.25×0.25×3.2 78-8.5+22-0.5 15-5÷12-
+ - = - + =
+ - + ) 0.25+ + + + + 10- -
-+ -(+) +- +-
+(+) +- -(+) 6-(-)
- ( + ) + + ++= +-=
- + 25 - - + - - ( - )
5-- + - + + +(-)
+(-) ++ ++ -(+)
2--= ++= 1--=
1--= ++= ++ + +=
+++ +++ -(+) 3 - - -
-+ +- 1-+ +﹙-﹚
2-﹙+﹚ 15-5+7 1-﹙3-1﹚ 1.875-﹙0.25+﹚
--= +-= ++= ++=
1--= ++ ++ 4--
-(+) -++ 2-- - 0.8++0.2
-( -) +(-) 2-- +-
-+ -- ++ +-
3–(- ) 6-(-) ++
4.8+ +1.2
+++ -+-
+++ +++
+ -(- ) + -(+ ) + - +
-++
-+- + + +
+++
-(-) -(-)
+- -+- +- -+
1-- + + +- ++
+(-) -+ -(+) -(-)
5-- +(-) 3-(+ ) -(-)
2--=
-+ -(-) -(+) -+
10-(+) -+
+ - + = (+)-(-) ---
+++--
-(-)+-(+)
解方程
2x+=4.625 + x =
X+= X + =
+x = x + = χ+=
+X= + + x = x +( + )=2
x+0.75- =0.15 x+16 = 35 0.5+4.5x=45.5
X÷4.5 = 20 5x-3x= 3.2 5.5X-3X=15
X-= 2X-=1- 3x-29 =19 2.7X-1.6 = 38.9
x- =
x - = χ- = +
X-+= 4x - =2- 8χ-9.1=22.9 3x-14×2 =11
8X-0.75×5=0.25 3.8x-0.8x=27
-x=
-x= -x= - x=
-X= 3×2-6x = 4.2
6 / 6
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