2025年一本口算能力训练一年级数学下册人教版
注:目前有些书本章节名称可能整理的还不是很完善,但都是按照顺序排列的,请同学们按照顺序仔细查找。练习册 2025年一本口算能力训练一年级数学下册人教版 答案主要是用来给同学们做完题方便对答案用的,请勿直接抄袭。
1. 口算。(建议用时6分钟)
80 + 2 =
37 - 7 =
30 - 10 =
71 - 1 =
53 - 3 =
40 - 30 =
90 + 3 =
35 - 5 =
4 + 30 =
49 - 9 =
10 + 70 =
90 + 9 =
10 + 30 =
6 + 90 =
93 - 90 =
76 - 6 =
70 + 2 =
80 - 50 =
65 - 60 =
15 - 5 =
74 - 70 =
40 + 4 =
40 + 20 =
82 - 80 =
40 - 20 =
96 - 6 =
20 + 7 =
42 - 2 =
80 + 9 =
70 - 10 =
25 - 5 =
64 - 60 =
90 - 10 =
63 - 60 =
8 + 40 =
85 - 80 =
20 + 50 =
70 + 1 =
2 + 30 =
51 - 50 =
70 + 5 =
40 + 10 =
67 - 60 =
98 - 8 =
50 + 4 =
50 + 7 =
60 + 8 =
66 - 6 =
80 + 2 =
37 - 7 =
30 - 10 =
71 - 1 =
53 - 3 =
40 - 30 =
90 + 3 =
35 - 5 =
4 + 30 =
49 - 9 =
10 + 70 =
90 + 9 =
10 + 30 =
6 + 90 =
93 - 90 =
76 - 6 =
70 + 2 =
80 - 50 =
65 - 60 =
15 - 5 =
74 - 70 =
40 + 4 =
40 + 20 =
82 - 80 =
40 - 20 =
96 - 6 =
20 + 7 =
42 - 2 =
80 + 9 =
70 - 10 =
25 - 5 =
64 - 60 =
90 - 10 =
63 - 60 =
8 + 40 =
85 - 80 =
20 + 50 =
70 + 1 =
2 + 30 =
51 - 50 =
70 + 5 =
40 + 10 =
67 - 60 =
98 - 8 =
50 + 4 =
50 + 7 =
60 + 8 =
66 - 6 =
答案:
82 30 20 70
50 10 93 30
34 40 80 99
40 96 3 70
72 30 5 10
4 44 60 2
20 90 27 40
89 60 20 4
80 3 48 5
70 71 32 1
75 50 7 90
54 57 68 60
50 10 93 30
34 40 80 99
40 96 3 70
72 30 5 10
4 44 60 2
20 90 27 40
89 60 20 4
80 3 48 5
70 71 32 1
75 50 7 90
54 57 68 60
2. 在□里填上合适的数。(建议用时2分钟)
□ + 30 = 60
□ - 5 = 90
□ - 40 = 30
□ + 10 = 80
9 + □ = 89
□ - 4 = 40
87 - □ = 80
□ + 50 = 70
59 - □ = 50
□ + 30 = 60
□ - 5 = 90
□ - 40 = 30
□ + 10 = 80
9 + □ = 89
□ - 4 = 40
87 - □ = 80
□ + 50 = 70
59 - □ = 50
答案:
30 95 70
70 80 44
7 20 9
70 80 44
7 20 9
3. 在〇里填上“>”“<”或“=”。(建议用时2分钟)
3 + 60〇80
90 + 4〇100
95 - 90〇95 - 5
76 - 6〇60
30 + 3〇40
7 + 50〇50 + 7
70 - 30〇30
54 - 50〇5
66 - 6〇60 + 2
82 - 2〇8
27 - 20〇7
40 + 4〇44 - 4
3 + 60〇80
90 + 4〇100
95 - 90〇95 - 5
76 - 6〇60
30 + 3〇40
7 + 50〇50 + 7
70 - 30〇30
54 - 50〇5
66 - 6〇60 + 2
82 - 2〇8
27 - 20〇7
40 + 4〇44 - 4
答案:
< < <
> < =
> < <
> = >
> < =
> < <
> = >
整十数加、减整十数:先把整十数看成以“十”为计数单位的数,再相加、减,得几就是几十
举例:1.30 + 60 = ____ 2.90 - 50 = ____
举例:1.30 + 60 = ____ 2.90 - 50 = ____
答案:
1. 想:3个十加6个十得9个十,也就是90。2.想:9个十减5个十得4个十,也就是40
整十数加一位数及相应的减法:1.几十加几:利用数的组成来计算。 2.几十几减几十和几十几减几:利用数的组成来计算或用“想加算减法”来计算
举例:1.40 + 8 = ____ 2.48 - 8 = ____
举例:1.40 + 8 = ____ 2.48 - 8 = ____
答案:
1.想:4个十和8个一,合起来是48。2.想:从4个十和8个一里去掉8个一,剩下4个十,就是40;或想40 + 8 = 48,所以48 - 8 = 40
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