五年级下数学分数加减法计算题
一、计算下面各题,能简便计算的要简便计算。
57 1 52114211947(1)+ +(2)-+(3)-( - )(4)+( - ) 696854153520540
7711121342954(5) -( -)(6)-( -)(7)6.12+ +2.88+(8) -( + ) 61038347724249
18737321777871535(9)-( +)(10)+ + +(11)+ + -(12) - -11118910910151215121188
291351 53177 1 1 (13)+( +)(14) -+(15) -+-(16)+ -714241236106109
43(17)
(21)1+
375771772025-(22)+-(23)--(24)0.85++1.15+412128242727778 551 63373311123 + 67(50)
(53)2-237
12(54)
(57)5-47 -137
(61)16+58+56+38(62)10314 -(2314 +3.9)10
二、解方程。
2x-8.125=18.1253xx -(314+417)=2x34x7834-0.6+x=1120
x
74788106868512 -(5121118
(58) 49 +310 +59 +710(59)57 -(35 -2411
7 )(60)5 -(5 +3 )
75+49+59+3
5(63) 34-13+56(64) 3-51711-11
16 -31120 -2.45+1.61516 -71231
5 -2.853 +610 +33
+2.7 +
13145519=9x+9=12x-6=4165-x=4
-(7-3)=7
27x12488
x
9965
617+x=3
35x13
42x-818=1818x-929=415x+3914
=5.375 -3113520 = 320+3x= 1834-x=5188