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-=
2=×8= 8÷0.4= ×4= 7-6.38=
36÷0.9 = 5÷0.001 = 13×÷0.02 = 0.36+1.54=
135÷5= ×÷÷3.5=
×÷÷26= 4.57+6.43=
5÷×4= ÷×99= 4.3-1.6=
×7= 0.6+7= ×0.5= ×8=×100=
÷×125= 3.2+1.78=
四、计算下面各题,能简算的要简算。
××32
7.5-(2.5+3.8) 5××5 ×125-10
10-4.8-3.2 ××0.17 ××1.7
××101 ×27+73×3.25
÷1.4×1.8 4×9×
××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-- + + +- ++
+(-) -+-(+) -(-)
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 X-1.6 = 38.9
x-=
x - = χ- = +
X-+= 4x - =2- 8χ-9.1=22.9 3x-14×2 =11
8X-×5=0.25 3.8x-0.8x=27
-x=
-x= -x= - x=
-X=3×2-6x = 4.2
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