分数乘除法简便运算100题(有答案)教学文稿

分数乘除法简便运算100题(有答案)教学文稿
分数乘除法简便运算100题(有答案)教学文稿

?

?? ??+÷51211015

7535÷??? ??

+分数乘除法简便运算100题

(1)(89 +427 )×3 ×9 (2)(38 - 38 )× 615 (3) 16 ×(7 - 2

3 )

(4) 56 ×59 + 59 × 16 (5)29 ×34 +527 × 34 (6) 613 ×75 - 613 × 2

5

(7) 712 ×6 - 512 × 6 (8)38 +38 ×47 +38 ×37 (9) 37× 3

35

(10) 6

25 × 24 (11)1521 ×34 + 1021 ×34 - 34 (12)710 ×101- 710

(13) 89 ×89 —89 ×89 (14) 35 × 99 + 35 (15) ( 47 + 8

9 )×7 ×9

(16)345 ×25 (17) 36×3435 (18) ( 56 - 59 )×18

5

(19)262

3 × 15 (20)3225 ×56 (21)

(22) (23)87748773÷+÷ (24)

91929197÷-÷

(25) ??? ??+?652053 (26)12

5

9412595÷+÷ (27)38 - 38 ×47 - 38 ×37

(28)623763? (29) 31÷76+32÷7

6

(30)229 ×(15×2931 )

(31)58 ×23 ×815 (32)2534 ×4 (33)54×(89 - 5

6 )

(34)7212451871211÷??? ??++(35)3831162375.011583÷

-?+? (36)1925214251975?+?+

(37)4818365÷??? ??+ (38) 241241343651211÷??? ??-+- (39)

115

9251197?+÷

(40)

341574357834265÷

+?+÷(41)883

883?÷? (42) ??? ??++÷??? ??++12191711259575

(43) 6

.0352444533533-÷+?+÷ (44)8×51+51×3.2 (45) 101×254

(46) 85+85×15 (47)8158

÷8 (48) 31×76+32×76

(49)( 90+881)×891 (50)57×38+58×57 (51)815×516+527÷10

9

(52)18×(49+5

6) (53)23×7+23×5 (54)(16-112)×(24-4

5

(55)(57×47+47)÷47 (56)15÷[(23+15

)×1

13] (57) 833×117+114×833

(58)31333×3 (59) 5912512795÷+? (60) 6

5

524532-?+

(61) (32×41+17)÷125 (62)(25+43)÷41+4

1 (63) 2518×169+257×169+

169

(64))7321495(63-+? (65) 2316]43)3121(85[÷?+- (66)(21×73+74×21)×4

1

(67)(99+

109)÷9 (68) 1514÷[(54+32)×1110] (69)(65+5

4

)×30

(70)65×56-109÷5

9 (71) 81×58+81

×41+81 (72)54×74×45-21 (80) 46×4544

(73) 54×65+52÷53 (74) 5

4÷[(85-21)÷85] (75) 3

5 ×153 – 0.6×53 (81) 2008×20062007

(76)(45 +14 )÷73 +710 (77)18 ×[12 ÷(35 ×109 )] (78) (215 +3

11 )×15×11 (79)39

1437?

(82) 47 ×1522 ×712 (83) 910 ×1317 +910 × 417 (84)36×937 (85)1113 -1113 ×13

33

(86) 257×101-257 (87) 9

5

739574?+? (88) 59 × 34 +59 × 14 (89)17× 916 (91)4544×37 (92)2004×200367 (93)73151×81 (94) 16620

1

÷41

(95)41×39 + 43×25 + 426×133 (96)1174×(232 - 43)+ 15121 ÷ 2117

(97)2000÷200020012000

(98)

199419921993119941993?+-? (99)353×2552 + 37.9×652 (100)(972+792)÷(75+95

分数乘除法简便运算100题答案

(1)(89 +427 )×3 ×9 =31 (2)(38 - 38 )× 6

15 =0

(3) 16 ×(7 - 23 )=18

19

(4) 56 ×59 + 59 × 16 = 59

(5)29 ×34 +527 × 34 =3611 (6) 613 ×75 - 613 × 25 = 6

13

(7) 712 ×6 - 512 × 6 =1 (8)38 +38 ×47 +38 ×37 = 43

(9) 37× 335 = 335

6

(10) 625 × 24

= 6

25 × (25-1)

=52519

(11)

1521 ×34 + 1021 ×34 - 34 =71 (12)710 ×101- 7

10

=70 (14) 89 ×89 —89 ×89 =0 (14) 35 × 99 + 3

5 =60

(15)( 47 + 89 )×7 ×9=92 (16)34

5 ×25=95

(17) 36×

3435 (18) ( 56 - 59 )×18

5

=1 =(35+1)×34

35

= 34

35

34 (19)262

3 × 15 (20)3225 ×56

=(25+35)× 15 =(30+5

12

)×56

=53

1

=27

(21) ??? ??+÷5121101 =71 (22) 57535÷??? ??+ =77

1

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