小数简便计算.docx
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小数简便计算.docx
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小数简便计算
【从教多年的心血】
500道四年级下册小数简便计算
题目以及相应答案
16.53+0.25+39.75
16.53+0.25+39.75
=
56.53
0.68+11.24+29.32
0.68+11.24+29.32
=
41.24
46.59-0.71-29.29
46.59-0.71-29.29
=
16.59
19.85+0.15-9.85
19.85+0.15-9.85
=
10.15
30.83-12.27+29.17
30.83-12.27+29.17
=
47.73
39.27-(0.19+19.27)
39.27-(0.19+19.27)
=
19.81
39.02-(19.02-0.15)
39.02-(19.02-0.15)
=
20.15
16.05+0.98+39.02
16.05+0.98+39.02
=
56.05
0.86+14.01+9.14
0.86+14.01+9.14
=
24.01
54.57-0.91-39.09
54.57-0.91-39.09
=
14.57
39.84+0.16-19.84
39.84+0.16-19.84
=
20.16
40.01-17.26+39.99
40.01-17.26+39.99
=
62.74
19.13-(0.7+9.13)
19.13-(0.7+9.13)
=
9.3
39.3-(19.3-0.24)
39.3-(19.3-0.24)
=
20.24
15.18+0.89+19.11
15.18+0.89+19.11
=
35.18
0.45+16.94+29.55
0.45+16.94+29.55
=
46.94
26.34-0.42-9.58
26.34-0.42-9.58
=
16.34
79.24+0.76-39.24
79.24+0.76-39.24
=
40.76
10-5.1+10
10-5.1+10
=
14.9
19.96-(0.86+9.96)
19.96-(0.86+9.96)
=
9.14
59.63-(29.63-0.61)
59.63-(29.63-0.61)
=
30.61
13.45+0.8+19.2
13.45+0.8+19.2
=
33.45
0.26+15.34+19.74
0.26+15.34+19.74
=
35.34
35.94-0.83-19.17
35.94-0.83-19.17
=
15.94
19.97+0.03-9.97
19.97+0.03-9.97
=
10.03
20.12-15.23+19.88
20.12-15.23+19.88
=
24.77
39.2-(0.95+19.2)
39.2-(0.95+19.2)
=
19.05
59.83-(29.83-0.18)
59.83-(29.83-0.18)
=
30.18
11.58+0.11+9.89
11.58+0.11+9.89
=
21.58
0.03+10.49+29.97
0.03+10.49+29.97
=
40.49
46.35-0.73-29.27
46.35-0.73-29.27
=
16.35
59.73+0.27-29.73
59.73+0.27-29.73
=
30.27
10.01-5.72+9.99
10.01-5.72+9.99
=
14.28
39.6-(0.63+19.6)
39.6-(0.63+19.6)
=
19.37
39.2-(19.2-0.86)
39.2-(19.2-0.86)
=
20.86
17.22+0.44+9.56
17.22+0.44+9.56
=
27.22
0.4+12.43+29.6
0.4+12.43+29.6
=
42.43
24.3-0.89-9.11
24.3-0.89-9.11
=
14.3
59.34+0.66-29.34
59.34+0.66-29.34
=
30.66
40.05-27.13+39.95
40.05-27.13+39.95
=
52.87
79.25-(0.78+39.25)
79.25-(0.78+39.25)
=
39.22
39.81-(19.81-0.67)
39.81-(19.81-0.67)
=
20.67
16.64+0.59+9.41
16.64+0.59+9.41
=
26.64
0.87+12.87+9.13
0.87+12.87+9.13
=
22.87
30.53-0.2-19.8
30.53-0.2-19.8
=
10.53
19.08+0.92-9.08
19.08+0.92-9.08
=
10.92
40.24-37.59+39.76
40.24-37.59+39.76
=
42.41
59.92-(0.28+29.92)
59.92-(0.28+29.92)
=
29.72
39.68-(19.68-0.22)
39.68-(19.68-0.22)
=
20.22
10.24+0.72+9.28
10.24+0.72+9.28
=
20.24
0.84+17.07+29.16
0.84+17.07+29.16
=
47.07
37.29-0.07-19.93
37.29-0.07-19.93
=
17.29
39.15+0.85-19.15
39.15+0.85-19.15
=
20.85
30.04-17.73+29.96
30.04-17.73+29.96
=
42.27
59.39-(0.23+29.39)
59.39-(0.23+29.39)
=
29.77
19.19-(9.19-0.81)
19.19-(9.19-0.81)
=
10.81
11.84+0.64+29.36
11.84+0.64+29.36
=
41.84
0.45+11+39.55
0.45+11+39.55
=
51
36.33-0.38-19.62
36.33-0.38-19.62
=
16.33
59.11+0.89-29.11
59.11+0.89-29.11
=
30.89
30.65-2.5+29.35
30.65-2.5+29.35
=
57.5
39.46-(0.2+19.46)
39.46-(0.2+19.46)
=
19.8
39.02-(19.02-0.5)
39.02-(19.02-0.5)
=
20.5
17.87+0.7+29.3
17.87+0.7+29.3
=
47.87
0.16+16.72+19.84
0.16+16.72+19.84
=
36.72
55.06-0.86-39.14
55.06-0.86-39.14
=
15.06
19.62+0.38-9.62
19.62+0.38-9.62
=
10.38
40.09-24.78+39.91
40.09-24.78+39.91
=
55.22
59.79-(0.49+29.79)
59.79-(0.49+29.79)
=
29.51
39.19-(19.19-0.94)
39.19-(19.19-0.94)
=
20.94
16.1+0.51+29.49
16.1+0.51+29.49
=
46.1
0.9+13.35+29.1
0.9+13.35+29.1
=
43.35
33.74-0.53-19.47
33.74-0.53-19.47
=
13.74
19.9+0.1-9.9
19.9+0.1-9.9
=
10.1
20.53-7.63+19.47
20.53-7.63+19.47
=
32.37
39.07-(0.8+19.07)
39.07-(0.8+19.07)
=
19.2
39.51-(19.51-0.52)
39.51-(19.51-0.52)
=
20.52
12.48+0.14+9.86
12.48+0.14+9.86
=
22.48
0.23+15.96+9.77
0.23+15.96+9.77
=
25.96
45.42-0.29-29.71
45.42-0.29-29.71
=
15.42
79.43+0.57-39.43
79.43+0.57-39.43
=
40.57
20.35-15.97+19.65
20.35-15.97+19.65
=
24.03
59.62-(0.73+29.62)
59.62-(0.73+29.62)
=
29.27
39.63-(19.63-0.05)
39.63-(19.63-0.05)
=
20.05
11.37+0.79+19.21
11.37+0.79+19.21
=
31.37
0+14.06+20
0+14.06+20
=
34.06
24.73-0.76-9.24
24.73-0.76-9.24
=
14.73
79.69+0.31-39.69
79.69+0.31-39.69
=
40.31
10.56-7.96+9.44
10.56-7.96+9.44
=
12.04
79.37-(0.76+39.37)
79.37-(0.76+39.37)
=
39.24
59.5-(29.5-0.2)
59.5-(29.5-0.2)
=
30.2
16.6+0.36+29.64
16.6+0.36+29.64
=
46.6
0.65+16.05+39.35
0.65+16.05+39.35
=
56.05
47.52-0.61-29.39
47.52-0.61-29.39
=
17.52
19.24+0.76-9.24
19.24+0.76-9.24
=
10.76
10.72-2.26+9.28
10.72-2.26+9.28
=
17.74
79.73-(0.37+39.73)
79.73-(0.37+39.73)
=
39.63
59.64-(29.64-0.55)
59.64-(29.64-0.55)
=
30.55
12.1+0.68+39.32
12.1+0.68+39.32
=
52.1
0.39+14.16+29.61
0.39+14.16+29.61
=
44.16
57.99-0.47-39.53
57.99-0.47-39.53
=
17.99
59.92+0.08-29.92
59.92+0.08-29.92
=
30.08
10.59-7.44+9.41
10.59-7.44+9.41
=
12.56
19.79-(0.67+9.79)
19.79-(0.67+9.79)
=
9.33
19.57-(9.57-0.51)
19.57-(9.57-0.51)
=
10.51
11.21+0.94+29.06
11.21+0.94+29.06
=
41.21
0.95+17.51+19.05
0.95+17.51+19.05
=
37.51
37.77-0.1-19.9
37.77-0.1-19.9
=
17.77
59.49+0.51-29.49
59.49+0.51-29.49
=
30.51
30.19-15.53+29.81
30.19-15.53+29.81
=
44.47
39.53-(0.07+19.53)
39.53-(0.07+19.53)
=
19.93
59.77-(29.77-0.07)
59.77-(29.77-0.07)
=
30.07
13.72+0.19+19.81
13.72+0.19+19.81
=
33.72
0.88+12.59+19.12
0.88+12.59+19.12
=
32.59
43.09-0.12-29.88
43.09-0.12-29.88
=
13.09
19.35+0.65-9.35
19.35+0.65-9.35
=
10.65
30.83-18.44+29.17
30.83-18.44+29.17
=
41.56
79.56-(0.86+39.56)
79.56-(0.86+39.56)
=
39.14
59.82-(29.82-0.1)
59.82-(29.82-0.1)
=
30.1
10.46+0.87+19.13
10.46+0.87+19.13
=
30.46
0.44+13.48+29.56
0.44+13.48+29.56
=
43.48
55.19-0.61-39.39
55.19-0.61-39.39
=
15.19
39.26+0.74-19.26
39.26+0.74-19.26
=
20.74
30.05-6.82+29.95
30.05-6.82+29.95
=
53.18
19.75-(0.42+9.75)
19.75-(0.42+9.75)
=
9.58
39.09-(19.09-0.01)
39.09-(19.09-0.01)
=
20.01
16.21+0.71+39.29
16.21+0.71+39.29
=
56.21
0.09+10.41+29.91
0.09+10.41+29.91
=
40.41
54.87-0.19-39.81
54.87-0.19-39.81
=
14.87
59.91+0.09-29.91
59.91+0.09-29.91
=
30.09
30.47-12.99+29.53
30.47-12.99+29.53
=
47.01
79.05-(0.23+39.05)
79.05-(0.23+39.05)
=
39.77
59.11-(29.11-0.73)
59.11-(29.11-0.73)
=
30.73
13.19+0.97+29.03
13.19+0.97+29.03
=
43.19
0.34+14.7+19.66
0.34+14.7+19.66
=
34.7
34.83-0.53-19.47
34.83-0.53-19.47
=
14.83
79.23+0.77-39.23
79.23+0.77-39.23
=
40.77
20.74-8.26+19.26
20.74-8.26+19.26
=
31.74
19.71-(0.19+9.71)
19.71-(0.19+9.71)
=
9.81
79.29-(39.29-0.26)
79.29-(39.29-0.26)
=
40.26
17.32+0.02+9.98
17.32+0.02+9.98
=
27.32
0.42+11.01+29.58
0.42+11.01+29.58
=
41.01
30.17-0.97-19.03
30.17-0.97-19.03
=
10.17
39.23+0.77-19.23
39.23+0.77-19.23
=
20.77
20.87-4.71+19.13
20.87-4.71+19.13
=
35.29
19.5-(0.37+9.5)
19.5-(0.37+9.5)
=
9.63
39.89-(19.89-0.54)
39.89-(19.89-0.54)
=
20.54
18+0.51+29.49
18+0.51+29.49
=
48
0.24+12.56+39.76
0.24+12.56+39.76
=
52.56
26.63-0.84-9.16
26.63-0.84-9.16
=
16.63
39.1+0.9-19.1
39.1+0.9-19.1
=
20.9
40.75-11.42+39.25
40.75-11.42+39.25
=
68.58
59.48-(0.78+29.48)
59.48-(0.78+29.48)
=
29.22
59.07-(29.07-0.55)
59.07-(29.07-0.55)
=
30.55
16.65+0.25+19.75
16.65+0.25+19.75
=
36.65
0.12+13.86+29.88
0.12+13.86+29.88
=
43.86
37.55-0.9-19.1
37.55-0.9-19.1
=
17.55
79.9+0.1-39.9
79.9+0.1-39.9
=
40.1
20.01-0.44+19.99
20.01-0.44+19.99
=
39.56
59.43-(0.01+29.43)
59.43-(0.01+29.43)
=
29.99
19.65-(9.65-0.32)
19.65-(9.65-0.32)
=
10.32
12.97+0.15+39.85
12.97+0.15+39.85
=
52.97
0.03+13.51+19.97
0.03+13.51+19.97
=
33.51
36.45-0.55-19.45
36.45-0.55-19.45
=
16.45
39.18+0.82-19.18
39.18+0.82-19.18
=
20.82
20.25-10.31+19.75
20.25-10.31+19.75
=
29.69
19.4-(0.37+9.4)
19.4-(0.37+9.4)
=
9.63
39.54-(19.54-0.32)
39.54-(19.54-0.32)
=
20.32
12.67+0.32+19.68
12.67+0.32+19.68
=
32.67
0.24+13.7+19.76
0.24+13.7+19.76
=
33.7
22.39-0.38-9.62
22.39-0.38-9.62
=
12.39
39.56+0.44-19.56
39.56+0.44-19.56
=
20.44
20.16-1.74+19.84
20.16-1.74+19.84
=
38.26
59.26-(0.19+29.26)
59.26-(0.19+29.26)
=
29.81
39.85-(19.85-0.83)
39.85-(19.85-0.83)
=
20.83
14.36+0.92+19.08
14.36+0.92+19.08
=
34.36
0.95+12.39+29.05
0.95+12.39+29.05
=
42.39
52.59-0.01-39.99
52.59-0.01-39.99
=
12.59
39.71+0.29-19.71
39.71+0.29-19.71
=
20.29
40.51-11.36+39.49
40.51-11.36+39.49
=
68.64
19.99-(0.37+9.99)
19.99-(0.37+9.99)
=
9.63
19.11-(9.11-0.24)
19.11-(9.11-0.24)
=
10.24
16.82+0.01+19.99
16.82+0.01+19.99
=
36.82
0.93+13.28+29.07
0.93+13.28+29.07
=
43.28
53.25-0.56-39.44
53.25-0.56-39.44
=
13.25
59.63+0.37-29.63
59.63+0.37-29.63
=
30.37
10.21-6.06+9.79
10.21-6.06+9.79
=
13.94
59.83-(0.09+29.83)
59.83-(0.09+29.83)
=
29.91
19.79-(9.79-0.67)
19.79-(9.79-0.67)
=
10.67
14.08+0.27+9.73
14.08+0.27+9.73
=
24.08
0.9+13.2+29.1
0.9+13.2+29.1
=
43.2
45.69-0.54-29.46
45.69-0.54-29.46
=
15.69
39.46+0.54-19.46
39.46+0.54-19.46
=
20.54
30.96-22.02+29.04
30.96-22.02+29.04
=
37.98
59.98-(0.44+29.98)
59.98-(0.44+29.98)
=
29.56
79.81-(39.81-0.46)
79.81-(39.81-0.46)
=
40.46
14.46+0.52+9.48
14.46+0.52+9.48
=
24.46
0.29+13.69+29.71
0.29+13.69+29.71
=
43.69
40.29-0.26-29.74
40.29-0.26-29.74
=
10.29
59.94+0.06-29.94
59.94+0.06-29.94
=
30.06
20.63-3.54+19.37
20.63-3.54+19.37
=
36.46
59.71-(0.1+29.71)
59.71-(0.1+29.71)
=
29.9
59.99-(29.99-0.59)
59.99-(29.99-0.59)
=
30.59
14.4+0.54+29.46
14.4+0.54+29.46
=
44.4
0.19+17.9+39.81
0.19+17.9+39.81
=
57.9
40.4-0.28-29.72
40.4-0.28-29.72
=
10.4
39.99+0.01-19.99
39.99+0.01-19.99
=
20.01
40.67-32.02+39.33
40.67-32.02+39.33
=
47.98
39.98-(0.46+19.98)
39.98-(0.46+19.98)
=
19.54
59.93-(29.93-0.79)
59.93-(29.93-0.79)
=
30.79
12.75+0.96+19.04
12.75+0.96+19.04
=
32.75
0.93+14.26+19.07
0.93+14.26+19.07
=
34.26
33.43-0.83-19.17
33.43-0.83-19.17
=
13.43
79.91+0.09-39.91
79.91+0.09-39.91
=
40.09
30.19-7.82+29.81
30.19-7.82+29.81
=
52.18
19.86-(0.47+9.86)
19.86-(0.47+9.86)
=
9.53
59.94-(29.94-0.
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