五年級口算題及答案 下冊800道)

時間 2021-10-26 13:00:11

1樓:

4/14+8/14=6/7

7/10+2/10=9/10

2/3÷8/16=3/4

5/8x4=5/2

注:\代表分號,/代表除號,2\1表示二分之一,5+4\1=5 4\1表示5又4/1(帶分數)*為乘號

與整數運算中的「湊整法」相同,在分數運算中,充分利用四則運演算法則和運算律(如交換律、結合律、分配律),使部分的和、差、積、商成為整數、整十數...從而使運算得到簡化。

注意事項

①分母一定不能為0,因為分母相當於除數。否則等式無法成立,分子可以等於0,因為分子相當於被除數。相當於0除以任何一個數,不論分母是多少,答案都是0。

②分數中的分子或分母經過約分後不能出現無理數(如2的平方根),否則就不是分數。

③一個最簡分數的分母中只有2和5兩個質因數就能化成有限小數;如果最簡分數的分母中只含有2和5以外的質因數那麼就能化成純迴圈小數;如果最簡分數的分母中既含有2或5兩個質因數也含有2和5以外的質因數那麼就能化成混迴圈小數。

2樓:安安

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3樓:匿名使用者

4001)2.9 × 0.5 = 答案:

1.45 (2)5.9 × 0.

2 = 答案:1.18 (3)3.

6 × 7 = 答案:25.2 (4)4.

3 × 0.3 = 答案:1.

29 (5)5.9 × 9 = 答案:53.

1 (6)9.4 × 9 = 答案:84.

6 (7)7.5 × 6 = 答案:45 (8)1.

3 × 3 = 答案:3.9 (9)3.

8 × 7 = 答案:26.6 (10)4.

7 × 5 = 答案:23.5 (11)5.

2 × 7 = 答案:36.4 (12)2.

3 × 2 = 答案:4.6 (13)6.

8 × 7 = 答案:47.6 (14)6.

7 × 0.3 = 答案:2.

01 (15)7.5 × 7 = 答案:52.

5 (16)7.1 × 0.7 = 答案:

4.97 (17)6.6 × 2 = 答案:

13.2 (18)3.5 × 0.

2 = 答案:0.7 (19)3.

7 × 0.3 = 答案:1.

11 (20)4 × 0.3 = 答案:1.

2 (21)9.2 × 9 = 答案:82.

8 (22)6.1 × 9 = 答案:54.

9 (23)6.8 × 5 = 答案:34 (24)4.

8 × 4 = 答案:19.2 (25)4.

1 × 2 = 答案:8.2 (26)6.

4 × 0.4 = 答案:2.

56 (27)9.6 × 7 = 答案:67.

2 (28)1.9 × 0.8 = 答案:

1.52 (29)4.2 × 0.

3 = 答案:1.26 (30)1.

9 × 0.8 = 答案:1.

52 (31)8.7 × 0.4 = 答案:

3.48 (32)2.6 × 7 = 答案:

18.2 (33)2.1 × 3 = 答案:

6.3 (34)1.6 × 2 = 答案:

3.2 (35)5.3 × 3 = 答案:

15.9 (36)8.5 × 9 = 答案:

76.5 (37)6.9 × 0.

7 = 答案:4.83 (38)6.

6 × 0.4 = 答案:2.

64 (39)4.3 × 8 = 答案:34.

4 (40)8.2 × 3 = 答案:24.

6 (41)8.4 × 6 = 答案:50.

4 (42)2 × 6 = 答案:12 (43)8.7 × 0.

3 = 答案:2.61 (44)3.

2 × 0.5 = 答案:1.

6 (45)8.5 × 0.9 = 答案:

7.65 (46)7.1 × 0.

7 = 答案:4.97 (47)7.

1 × 6 = 答案:42.6 (48)7.

4 × 0.5 = 答案:3.

7 (49)9.6 × 3 = 答案:28.

8 (50)8.4 × 8 = 答案:67.

2 (51)2.5 × 4 = 答案:10 (52)1.

3 × 3 = 答案:3.9 (53)8 × 0.

4 = 答案:3.2 (54)7.

8 × 9 = 答案:70.2 (55)6 × 0.

5 = 答案:3 (56)7.7 × 8 = 答案:

61.6 (57)9.9 × 0.

7 = 答案:6.93 (58)5.

4 × 2 = 答案:10.8 (59)5.

1 × 2 = 答案:10.2 (60)4.

7 × 3 = 答案:14.1 (61)1.

2 × 0.2 = 答案:0.

24 (62)5.3 × 0.2 = 答案:

1.06 (63)2.7 × 8 = 答案:

21.6 (64)2 × 9 = 答案:18 (65)9.

6 × 9 = 答案:86.4 (66)5.

4 × 3 = 答案:16.2 (67)9.

3 × 3 = 答案:27.9 (68)5.

5 × 0.8 = 答案:4.

4 (69)7.4 × 0.7 = 答案:

5.18 (70)3.4 × 0.

6 = 答案:2.04 (71)4.

5 × 0.4 = 答案:1.

8 (72)3.8 × 7 = 答案:26.

6 (73)4.7 × 0.2 = 答案:

0.94 (74)1.5 × 6 = 答案:

9 (75)8 × 0.9 = 答案:7.

2 (76)9.2 × 0.6 = 答案:

5.52 (77)2.4 × 9 = 答案:

21.6 (78)1.8 × 5 = 答案:

9 (79)8.9 × 0.6 = 答案:

5.34 (80)3.2 × 0.

8 = 答案:2.56 (81)9.

7 × 9 = 答案:87.3 (82)6 × 7 = 答案:

42 (83)1.6 × 0.7 = 答案:

1.12 (84)6.3 × 2 = 答案:

12.6 (85)7.1 × 0.

8 = 答案:5.68 (86)5.

2 × 7 = 答案:36.4 (87)3.

9 × 0.8 = 答案:3.

12 (88)9.9 × 0.2 = 答案:

1.98 (89)2.4 × 0.

4 = 答案:0.96 (90)3.

5 × 5 = 答案:17.5 (91)7.

7 × 3 = 答案:23.1 (92)9.

5 × 0.2 = 答案:1.

9 (93)7.8 × 0.3 = 答案:

2.34 (94)3.4 × 8 = 答案:

27.2 (95)1.3 × 0.

6 = 答案:0.78 (96)9 × 0.

5 = 答案:4.5 (97)3.

5 × 0.5 = 答案:1.

75 (98)3.4 × 9 = 答案:30.

6 (99)3.4 × 0.9 = 答案:

3.06 (100)6.5 × 0.

5 = 答案:3.25 1)7.

4 × 6 = 答案:44.4 (2)2.

3 × 5 = 答案:11.5 (3)5.

1 × 0.4 = 答案:2.

04 (4)9.6 × 4 = 答案:38.

4 (5)5.4 × 5 = 答案:27 (6)1.

5 × 0.8 = 答案:1.

2 (7)9.4 × 2 = 答案:18.

8 (8)1.6 × 0.8 = 答案:

1.28 (9)7.5 × 0.

7 = 答案:5.25 (10)3.

7 × 9 = 答案:33.3 (11)1.

8 × 0.6 = 答案:1.

08 (12)3.5 × 7 = 答案:24.

5 (13)9.3 × 4 = 答案:37.

2 (14)2.7 × 0.7 = 答案:

1.89 (15)5.2 × 7 = 答案:

36.4 (16)3.8 × 0.

2 = 答案:0.76 (17)1.

2 × 0.9 = 答案:1.

08 (18)6.1 × 7 = 答案:42.

7 (19)3.8 × 0.7 = 答案:

2.66 (20)1.6 × 5 = 答案:

8 (21)5.9 × 0.3 = 答案:

1.77 (22)9 × 9 = 答案:81 (23)7.

1 × 0.3 = 答案:2.

13 (24)9.7 × 2 = 答案:19.

4 (25)5.8 × 0.8 = 答案:

4.64 (26)1.7 × 6 = 答案:

10.2 (27)9.6 × 0.

5 = 答案:4.8 (28)1.

8 × 4 = 答案:7.2 (29)4.

3 × 0.6 = 答案:2.

58 (30)1.3 × 9 = 答案:11.

7 (31)2.9 × 8 = 答案:23.

2 (32)5.6 × 7 = 答案:39.

2 (33)5.3 × 0.6 = 答案:

3.18 (34)5.4 × 0.

7 = 答案:3.78 (35)5.

3 × 0.2 = 答案:1.

06 (36)8.3 × 2 = 答案:16.

6 (37)9.5 × 3 = 答案:28.

5 (38)7.3 × 2 = 答案:14.

6 (39)2 × 0.5 = 答案:1 (40)5.

2 × 0.6 = 答案:3.

12 (41)9.7 × 7 = 答案:67.

9 (42)6.1 × 8 = 答案:48.

8 (43)6.7 × 0.2 = 答案:

1.34 (44)8.6 × 6 = 答案:

51.6 (45)3.1 × 0.

5 = 答案:1.55 (46)8.

2 × 6 = 答案:49.2 (47)1.

5 × 6 = 答案:9 (48)8.4 × 2 = 答案:

16.8 (49)1.3 × 6 = 答案:

7.8 (50)8.9 × 0.

5 = 答案:4.45 (51)6.

7 × 2 = 答案:13.4 (52)5.

4 × 6 = 答案:32.4 (53)6.

3 × 9 = 答案:56.7 (54)6.

4 × 3 = 答案:19.2 (55)8.

5 × 0.2 = 答案:1.

7 (56)1.5 × 0.5 = 答案:

0.75 (57)3 × 0.4 = 答案:

1.2 (58)6.8 × 5 = 答案:

34 (59)8.7 × 0.3 = 答案:

2.61 (60)5.6 × 6 = 答案:

33.6 (61)5.5 × 0.

7 = 答案:3.85 (62)9.

6 × 0.3 = 答案:2.

88 (63)9.6 × 7 = 答案:67.

2 (64)8.3 × 3 = 答案:24.

9 (65)9.5 × 0.5 = 答案:

4.75 (66)5.5 × 9 = 答案:

49.5 (67)1.9 × 9 = 答案:

17.1 (68)2.2 × 7 = 答案:

15.4 (69)3.8 × 0.

9 = 答案:3.42 (70)1.

8 × 0.7 = 答案:1.

26 (71)4.6 × 0.2 = 答案:

0.92 (72)1.3 × 0.

2 = 答案:0.26 (73)4.

3 × 0.9 = 答案:3.

87 (74)1.4 × 2 = 答案:2.

8 (75)7 × 5 = 答案:35 (76)2.5 × 7 = 答案:

17.5 (77)6.4 × 0.

4 = 答案:2.56 (78)6.

3 × 5 = 答案:31.5 (79)3.

1 × 4 = 答案:12.4 (80)5.

8 × 0.7 = 答案:4.

06 (81)1.2 × 8 = 答案:9.

6 (82)6.5 × 0.5 = 答案:

3.25 (83)3.9 × 0.

9 = 答案:3.51 (84)9.

3 × 3 = 答案:27.9 (85)2 × 2 = 答案:

4 (86)3.7 × 5 = 答案:18.

5 (87)1.1 × 3 = 答案:3.

3 (88)6.5 × 5 = 答案:32.

5 (89)2.7 × 0.8 = 答案:

2.16 (90)8.4 × 8 = 答案:

67.2 (91)4.2 × 0.

8 = 答案:3.36 (92)6.

9 × 2 = 答案:13.8 (93)6.

6 × 2 = 答案:13.2 (94)9.

5 × 0.8 = 答案:7.

6 (95)6.6 × 0.7 = 答案:

4.62 (96)1.7 × 0.

5 = 答案:0.85 (97)6.

9 × 9 = 答案:62.1 (98)8.

4 × 6 = 答案:50.4 (99)9.

4 × 0.5 = 答案:4.

7 (100)8.4 × 0.5 = 答案:

4.2 (1)5.6 × 8 = 答案:

44.8 (2)3.9 × 5 = 答案:

19.5 (3)5.4 × 0.

4 = 答案:2.16 (4)7.

3 × 0.2 = 答案:1.

46 (5)9.4 × 8 = 答案:75.

2 (6)3.8 × 0.3 = 答案:

1.14 (7)8.6 × 0.

4 = 答案:3.44 (8)7.

3 × 4 = 答案:29.2 (9)4.

8 × 0.4 = 答案:1.

92 (10)1.3 × 4 = 答案:5.

2 (11)7.3 × 8 = 答案:58.

4 (12)8 × 4 = 答案:32 (13)3.2 × 6 = 答案:

19.2 (14)4.7 × 0.

3 = 答案:1.41 (15)4.

6 × 0.9 = 答案:4.

14 (16)9.9 × 4 = 答案:39.

6 (17)8.2 × 0.5 = 答案:

4.1 (18)8.2 × 0.

5 = 答案:4.1 (19)5 × 0.

8 = 答案:4 (20)5.7 × 9 = 答案:

51.3 (21)3.9 × 5 = 答案:

19.5 (22)7.3 × 2 = 答案:

14.6 (23)5.3 × 3 = 答案:

15.9 (24)6.7 × 0.

2 = 答案:1.34 (25)4.

3 × 0.5 = 答案:2.

15 (26)4.7 × 0.4 = 答案:

1.88 (27)2.4 × 5 = 答案:

12 (28)7.3 × 0.3 = 答案:

2.19 (29)3.8 × 0.

9 = 答案:3.42 (30)7.

3 × 4 = 答案:29.2 (31)5.

1 × 0.7 = 答案:3.

57 (32)9.8 × 2 = 答案:19.

6 (33)8.3 × 0.7 = 答案:

5.81 (34)4.3 × 0.

6 = 答案:2.58 (35)9.

5 × 0.3 = 答案:2.

85 (36)9.9 × 5 = 答案:49.

5 (37)3.4 × 2 = 答案:6.

8 (38)2.9 × 4 = 答案:11.

6 (39)1.1 × 6 = 答案:6.

6 (40)2.1 × 5 = 答案:10.

5 (41)9.1 × 0.8 = 答案:

7.28 (42)9.7 × 0.

3 = 答案:2.91 (43)9.

6 × 0.5 = 答案:4.

8 (44)5.1 × 0.6 = 答案:

3.06 (45)5.5 × 8 = 答案:

44 (46)9 × 8 = 答案:72 (47)5 × 4 = 答案:20 (48)4.

1 × 5 = 答案:20.5 (49)1.

4 × 0.3 = 答案:0.

42 (50)2.4 × 9 = 答案:21.

6 (51)5.1 × 7 = 答案:35.

7 (52)7.9 × 5 = 答案:39.

5 (53)4.1 × 9 = 答案:36.

9 (54)1.6 × 2 = 答案:3.

2 (55)6.7 × 0.8 = 答案:

5.36 (56)8.9 × 0.

7 = 答案:6.23 (57)6.

2 × 0.2 = 答案:1.

24 (58)2.6 × 7 = 答案:18.

2 (59)6.8 × 0.6 = 答案:

4.08 (60)5.6 × 9 = 答案:

50.4 (61)9.8 × 0.

8 = 答案:7.84 (62)9 × 9 = 答案:

81 (63)3.8 × 7 = 答案:26.

6 (64)2.5 × 6 = 答案:15 (65)1.

7 × 5 = 答案:8.5 (66)4.

6 × 0.7 = 答案:3.

22 (67)8.9 × 3 = 答案:26.

7 (68)7.9 × 0.6 = 答案:

4.74 (69)6.3 × 4 = 答案:

25.2 (70)2.9 × 0.

3 = 答案:0.87 (71)4.

6 × 8 = 答案:36.8 (72)1.

5 × 2 = 答案:3 (73)6.9 × 0.

7 = 答案:4.83 (74)5.

8 × 6 = 答案:34.8 (75)3.

4 × 0.5 = 答案:1.

7 (76)1.9 × 2 = 答案:3.

8 (77)8.3 × 0.4 = 答案:

3.32 (78)7.4 × 6 = 答案:

44.4 (79)4.5 × 3 = 答案:

13.5 (80)5.9 × 4 = 答案:

23.6 (81)8.9 × 0.

2 = 答案:1.78 (82)4.

9 × 8 = 答案:39.2 (83)7.

5 × 2 = 答案:15 (84)1.5 × 7 = 答案:

10.5 (85)8.3 × 0.

4 = 答案:3.32 (86)6.

1 × 0.6 = 答案:3.

66 (87)3.7 × 0.5 = 答案:

1.85 (88)7.4 × 0.

5 = 答案:3.7 (89)1.

3 × 0.7 = 答案:0.

91 (90)3.5 × 0.7 = 答案:

2.45 (91)9.9 × 0.

2 = 答案:1.98 (92)2 × 7 = 答案:

14 (93)4.4 × 0.8 = 答案:

3.52 (94)8.5 × 4 = 答案:

34 (95)9.8 × 8 = 答案:78.

4 (96)9 × 9 = 答案:81 (97)2.7 × 8 = 答案:

21.6 (98)1.6 × 0.

3 = 答案:0.48 (99)5.

7 × 3 = 答案:17.1 (100)7.

5 × 5 = 答案:37.5 1)4.

1 × 0.7 = 答案:2.

87 (2)3.9 × 5 = 答案:19.

5 (3)8.5 × 2 = 答案:17 (4)7.

7 × 6 = 答案:46.2 (5)4 × 9 = 答案:

36 (6)1.7 × 2 = 答案:3.

4 (7)7.9 × 6 = 答案:47.

4 (8)4.2 × 0.9 = 答案:

3.78 (9)2.6 × 6 = 答案:

15.6 (10)9.9 × 8 = 答案:

79.2 (11)1.7 × 5 = 答案:

8.5 (12)2.4 × 4 = 答案:

9.6 (13)6 × 0.4 = 答案:

2.4 (14)3.9 × 6 = 答案:

23.4 (15)7 × 0.4 = 答案:

2.8 (16)7.6 × 0.

4 = 答案:3.04 (17)3.

9 × 0.7 = 答案:2.

73 (18)2.8 × 0.3 = 答案:

0.84 (19)3 × 9 = 答案:27 (20)8.

1 × 0.3 = 答案:2.

43 (21)3.3 × 8 = 答案:26.

4 (22)8.1 × 0.7 = 答案:

5.67 (23)2.2 × 3 = 答案:

6.6 (24)3 × 6 = 答案:18 (25)3.

2 × 5 = 答案:16 (26)4.3 × 7 = 答案:

30.1 (27)6.7 × 5 = 答案:

33.5 (28)2.7 × 0.

7 = 答案:1.89 (29)1.

4 × 0.9 = 答案:1.

26 (30)1.6 × 9 = 答案:14.

4 (31)8 × 0.8 = 答案:6.

4 (32)5.9 × 2 = 答案:11.

8 (33)3.6 × 9 = 答案:32.

4 (34)1.4 × 0.6 = 答案:

0.84 (35)8.3 × 0.

2 = 答案:1.66 (36)7 × 9 = 答案:

63 (37)8.7 × 8 = 答案:69.

6 (38)2.9 × 3 = 答案:8.

7 (39)6.7 × 0.2 = 答案:

1.34 (40)1.6 × 0.

8 = 答案:1.28 (41)9.

6 × 2 = 答案:19.2 (42)5.

4 × 5 = 答案:27 (43)5.8 × 0.

7 = 答案:4.06 (44)3.

7 × 0.2 = 答案:0.

74 (45)8.7 × 0.6 = 答案:

5.22 (46)2.1 × 0.

4 = 答案:0.84 (47)1.

6 × 5 = 答案:8 (48)4.6 × 3 = 答案:

13.8 (49)9.5 × 0.

6 = 答案:5.7 (50)5.

6 × 9 = 答案:50.4 (51)5.

9 × 0.3 = 答案:1.

77 (52)9 × 2 = 答案:18 (53)9 × 4 = 答案:36 (54)4.

5 × 3 = 答案:13.5 (55)4.

4 × 6 = 答案:26.4 (56)5.

5 × 4 = 答案:22 (57)8.6 × 6 = 答案:

51.6 (58)6.6 × 0.

2 = 答案:1.32 (59)8.

7 × 0.6 = 答案:5.

22 (60)2.4 × 0.6 = 答案:

1.44 (61)2.1 × 0.

2 = 答案:0.42 (62)4.

4 × 0.8 = 答案:3.

52 (63)7.1 × 9 = 答案:63.

9 (64)3.8 × 3 = 答案:11.

4 (65)8.9 × 7 = 答案:62.

3 (66)7.1 × 0.2 = 答案:

1.42 (67)3.9 × 0.

5 = 答案:1.95 (68)1.

6 × 0.7 = 答案:1.

12 (69)3.9 × 0.9 = 答案:

3.51 (70)7.7 × 2 = 答案:

15.4 (71)7 × 0.7 = 答案:

4.9 (72)8.3 × 4 = 答案:

33.2 (73)5.1 × 0.

2 = 答案:1.02 (74)9.

2 × 0.8 = 答案:7.

36 (75)1.3 × 6 = 答案:7.

8 (76)6.8 × 7 = 答案:47.

6 (77)2.2 × 3 = 答案:6.

6 (78)3.2 × 8 = 答案:25.

6 (79)6.8 × 0.2 = 答案:

1.36 (80)4.7 × 0.

2 = 答案:0.94 (81)6.

7 × 9 = 答案:60.3 (82)9.

9 × 7 = 答案:69.3 (83)3.

3 × 0.2 = 答案:0.

66 (84)2.3 × 3 = 答案:6.

9 (85)8.3 × 0.5 = 答案:

4.15 (86)8.5 × 0.

2 = 答案:1.7 (87)1.

7 × 0.7 = 答案:1.

19 (88)9 × 0.6 = 答案:5.

4 (89)9.9 × 5 = 答案:49.

5 (90)7.4 × 0.3 = 答案:

2.22 (91)7.7 × 2 = 答案:

15.4 (92)9.9 × 0.

4 = 答案:3.96 (93)5 × 0.

2 = 答案:1 (94)8.5 × 5 = 答案:

42.5 (95)9.1 × 9 = 答案:

81.9 (96)5.6 × 0.

5 = 答案:2.8 (97)5 × 8 = 答案:

40 (98)3.1 × 0.4 = 答案:

1.24 (99)6.8 × 8 = 答案:

54.4 (100)1.9 × 0.

2 = 答案:0.38

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