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
15351873732177787
(9) -( + ) (10) + + + (11) + + - (12) 11- 8- 8
11111091015121512
291351 5 3 1 7 7 1 1 (13) +( + ) (14) - + (15) - + - (16) + -
71424123610610943
(17)
5 9
- (
5 9
-
1 5
633733111 ) (18)8+3+4 (19)5-10-5 (20)4-28+14
375777202517(21)1+4-12 (22)12+8-24 (23)8-27-27 (24)0.85+7+1.15+7
31731453421
(25) + + (26) - - (27) + +4 (28) + +
124121088156535
5
517154273333
(29)1- - (30) - + (31) -( - ) (32) 8-( - )
1818175131071048
55532551552 1
(33) +( - ) (34) - + (35)3-9+6 (36)2-7-7
636636
22125833811332
(37) 8+5+8+5 (38) 6- - (39) - + - (40) 5-6+3
1111145145
311131 7 1 1 321
(41) + - (42) -( - ) (43)5-(2- 4 ) (44)10+5-3
993454
3112175185135(45)9-(6+3 ) (46)7+ (4+7) (47) 8-(8+10) (48) 6+8+6+8
2626551355532
(49) + - + (50) -( - ) (51) +( - ) (52) - +
373712121083
2713558177111(53)2-312 (54) + +( + ) (55) -( + ) (56) + -
1288129191218
434357532411
(57)5- -1 (58) + + + (59) -( - ) (60) -( + )
77910910757553
35157415175353(61)6+8+6+8 (62)5+9+9+5 (63) 4-3+6 () 3-11-11
11111231
10 -(2 +3.9) 10 -3 -2.45+1.6 15 -7 -2.8 5 +6 +3 +2.7 1414620653103
33
二、解方程。
1314551412x-8.125=18.125 3x+9=9 x+9=1 2x-6=6 5-x=4
341737x -(14+7)=2 x-(4-8)=8
271512xx99 66 7+x=3
373311219xx148 54 2x-88=188 x-99=45 x+314=5.375
311135
4-0.6+x=120 x-3 = 3 6.75+3x= 18 3.25+4.5-x=5
15.375+5X=2038
2020418