[从头学数学] 第16节 100以内的加法和减法（一）

剧情提要：
[机器小伟]在[工程师阿伟]的陪同下进入练气期二层功法的修炼，
今天要修炼的是[100以内的加法和减法（一）]。

正剧开始：

星历2015年12月25日 15:02:12, 银河系厄尔斯星球中华帝国江南行省。
[工程师阿伟]正在和[机器小伟]一起观看[100以内的加法和减法（一）]

星历2015年12月25日 15:02:51, [机器小伟]说：[阿伟大人]，这一章节好简单，简直无聊!
星历2015年12月25日 13:40:58, [工程师阿伟]说：不错，确实太简单了，不过一直以来只
有我知道你厉害，小册友们还不相信呢，这样吧，这次五个练习，你就给小朋友们做下看看
吧。[机器小伟]。
星历2015年12月25日 13:41:36, [机器小伟]说：[阿伟大人]，好的，我就做一次吧，不然
，实在这一章节就没什么可做的了。
13:42:08, [机器小伟解答开始计时：

<span style="font-size:18px;">#[机器小伟]解答
#[人教版小学一年级数学下册 练习十四]
#1.
20+30 = 50 30+40 = 70 50+30 = 80 80+10 = 90 
50-20 = 30 70-40 = 30 80-30 = 50 90-80 = 10 
#2.
40+30 = 70 80-80 = 0 90-40 = 50 9+30 = 39 
70+7 = 77 20+20 = 40 60-50 = 10 95-5 = 90 
#3.
40+3 = 43 40+30 = 70 
#4.
1+3+4 = 8 9-4-3 = 2 
10+30+40 = 80 90-40-30 = 20 
#5.
#(1)
50+40 = 90 
#(2)
100-(50+40) = 10 

#[机器小伟]解答
#[人教版小学一年级数学下册 练习十五]
#1.
35+4 = 39 42+3 = 45 5+26 = 31 7+21 = 28 
35+40 = 75 42+30 = 72 50+26 = 76 70+21 = 91 
#2.
64+30 = 94 93+4 = 97 5+31 = 36 58+20 = 78 
86+2 = 88 20+67 = 87 45+30 = 75 4+72 = 76 
#3.
20+23 = 43 
#4.
56+9 = 65 
#5.
7+6 = 13 9+5 = 14 6+4 = 10 8+9 = 17 
27+6 = 33 39+5 = 44 6+54 = 60 8+79 = 87 
#6.
23+8-21 = 10 67+2-89 = -20 
5+47-97 = -45 59+2-61 = 0 
#7.
25+8 = 33 
#8.
13+7 = 20 25+6 = 31 48+4 = 52 79+2 = 81 
13+70 = 83 25+60 = 85 48+40 = 88 79+20 = 99 
#9.(单独解)
#练习十五 第9题
def tmp():
    a = [15,6,74,7,47,8,33,9,62];
    for i in range(len(a)-1):
        print(a[i]+a[i+1], end=', ');
    return;
	
>>> 
21, 80, 81, 54, 55, 41, 42, 71, 
#10 
80+9 = 89 59+8 = 67 84+5 = 89 47+20 = 67 
49+4 = 53 3+86 = 89 23+30 = 53 39+50 = 89 
#11.
20+6 = 26 25+6 = 31 77+6 = 83 
3+34 = 37 8+34 = 42 60+34 = 94 
#12(单独解)
#练习十五 第12题
def tmp():
    for i in range(8):
        print(6+6*i, end=', ');
    print('\n');
    for i in range (8):
        print(8+8*i, end=', ');
    return;
>>> 
6, 12, 18, 24, 30, 36, 42, 48, 

8, 16, 24, 32, 40, 48, 56, 64, 
#13
35+7 = 42 
#14
26+9-36 = -1 34+7-40 = 1 86-(76+8) = 2 
49+5-54 = 0 88+6-93 = 1 61-(53+9) = -1 
#15
24+30+5 = 59 7+53+10 = 70 46-6+40 = 80 
26+3+8 = 37 34+8+50 = 92 73+20-3 = 90 
#16
10+15+30 = 55 5+20+25 = 50 

#[机器小伟]解答
#[人教版小学一年级数学下册 练习十六]
#1.
57-3 = 54 65-4 = 61 89-7 = 82 37-5 = 32 
99-8 = 91 48-6 = 42 26-2 = 24 75-4 = 71 
#2.
63-20 = 43 37-4 = 33 59-30 = 29 84-4 = 80 
46-3 = 43 72-50 = 22 28-7 = 21 96-60 = 36 
#3.
68-5 = 63 
#4.
48-30 = 18 
#5.
10-6 = 4 14-7 = 7 15-9 = 6 13-8 = 5 
50-6 = 44 34-7 = 27 85-9 = 76 63-8 = 55 
#6.(结果为0的对)
48-5-33 = 10 43-7-36 = 0 
74-6-14 = 54 52-9-53 = -10 
#7.
22-7 = 15 
#8.
74-6 = 68 60-3 = 57 92-7 = 85 53-4 = 49 
74-60 = 14 60-30 = 30 92-70 = 22 53-40 = 13 
#9.(单独解)
#练习十六 第9题
def tmp():
    a = [74, 50,41,35,82,63];
    b = [43,70,27,95,84,53];
    for i in range(len(a)):
        print(a[i]-6, end=', ');
    print('\n');
    for i in range (len(b)):
        print(b[i]-8, end=', ');
    return;
	
>>> 
68, 44, 35, 29, 76, 57, 

35, 62, 19, 87, 76, 45, 
#10.
39-4-36 = -1 68-40-28 = 0 76-8-67 = 1 
87-30-49 = 8 94-7-88 = -1 53-9-45 = -1 
#11.
93-30 = 63 76-4 = 72 84-9 = 75 50-5 = 45 
75-40 = 35 80-7 = 73 15-6 = 9 64-20 = 44 
#12.(单独解)
#练习十六 第12题
def tmp():
    for i in range(9):
        print(70-7*i, end=', ');
    print('\n');
    for i in range (9):
        print(90-9*i, end=', ');
    return;

>>> 
70, 63, 56, 49, 42, 35, 28, 21, 14, 

90, 81, 72, 63, 54, 45, 36, 27, 18, 
#13.
10-8 = 2 
#14.(单独解)
#练习十六 第14题
def tmp():
    a=[20, -6, +9, -30];
    b=31;
    for i in range(len(a)):        
        print(b, end=', ');
        b = b+a[i];
    print(b);
    print('\n');
    a=[-8,-5,40,+7];
    b=60;
    for i in range (len(a)):
        print(b, end=', ');
        b=b+a[i];
    print(b);
    return;
>>> 
31, 51, 45, 54, 24
60, 52, 47, 87, 94

#15.
(30-22)/2 = 4.0 (65-51)/2 = 7.0 

#[机器小伟]解答
#[人教版小学一年级数学下册 练习十七]
#1.
8+4+7 = 19 13-6+3 = 10 
8+(4+7) = 19 13-(6+3) = 4 
#2.
5+(2+3) = 10 7+(14-9) = 12 
40+20+8 = 68 90-(16+4) = 70 
#3.
45-(5+3) = 37 
#4.
54-5+30 = 79 76-6-8 = 62 
87-9-10 = 68 65-7-40 = 18 
43-(3+27) = 13 39-(9-5) = 35 
#5.
13-5 = 8 24-5 = 19 40-5 = 35 
25-9 = 16 37-9 = 28 50-9 = 41 
#6.
39-6 = 33 75+7 = 82 82-6 = 76 54-9 = 45 
68+5 = 73 93-4 = 89 56+8 = 64 37-4 = 33 
#7.
40-6 = 34 
#8.
36+40+2 = 78 
59-9-20 = 30 
63-30+5 = 38 
30+(11-4) = 37 
47+(18-9) = 56 
40+(15-8) = 47 
75-(10+50) = 15 
#9.
76-3 = 73 61-5 = 56 49+7 = 56 82-9 = 73 
96-40 = 56 30+18 = 48 80-7 = 73 68-20 = 48 
66+7 = 73 56-8 = 48 
#10.
58-5-(58-50) = 45 26+30-(63-7) = 0 
96-70-(6+70) = -50 20+62-(62+8) = 12 

#[机器小伟]解答
#[人教版小学一年级数学下册 练习十八]
#1.
20+20+20 = 60 
#2.
24+8 = 32 76+8 = 84 53+8 = 61 
26-7 = 19 45-7 = 38 70-7 = 63 
#3.
8*2/3 = 5.333333333333333 
#4.
73+5-(37+5) = 36 48-7-(48-9) = 2 
56-20-(56-2) = -18 72+8-(8+72) = 0 
#5.
86-30 = 56 89-50 = 39 57+8 = 65 88+5 = 93 85-20 = 65 
9+30 = 39 47+9 = 56 6+56 = 62 71-9 = 62 82-9 = 73 
#6.
14+6+42 = 62 56+5-20 = 41 60-8-30 = 22 
48+(18-9) = 57 17+(54-4) = 67 73-(13+7) = 53 
#7.
30-7 = 23 
#8.
6*3-17 = 1 
#9.
20-8 = 12 45-20 = 25 
#10.(单独解)
#练习十八 第10题
def tmp():
    a=[30, 32, 30];
    
    for i in range(len(a)):
        for j in range(i+1, len(a)):
            if a[i]+a[j]<=60:
                print('{0}斑和{1}班可以一起乘船。'.format(i+1, j+1));
            else:
                print('{0}斑和{1}班不可以。'.format(i+1, j+1));
    return;
	
>>> 
1斑和2班不可以。
1斑和3班可以一起乘船。
2斑和3班不可以。

#[机器小伟]解答
#[人教版小学一年级数学下册 练习十九]
#1.
4+36 = 40 50+36 = 86 9+36 = 45 
28-6 = 22 45-6 = 39 70-6 = 64 
#2.
25+8 = 33 97-60 = 37 50+16 = 66 82-5 = 77 
58-20 = 38 65-7 = 58 36+7 = 43 39+40 = 79 
#3.
17+6+8 = 31 43-8-30 = 5 
60+38-90 = 8 50+27-9 = 68 
54+(17+3) = 74 93-(68-60) = 85 
#4.
96-4 = 92 
#5.
58-(26+4) = 28 83-20+5 = 68 34+20 = 54 
60+(14-7) = 67 56+9 = 65 93-30 = 63 76-4 = 72 
#6.
5*5 = 25 6*5 = 30 
#7.
18//4 = 4 
#8.
56-50 = 6 
#9.
37-4+5 = 38 48+20+7 = 75 20+8+6 = 34 38-(30+8) = 0 50+17-7 = 60 
#10.
12+9 = 21 
#11.(单独解)
#练习十九 第11题
def tmp():
    a=[8,-7,+30,-9,-20,+4];
    b=14;
    for i in range(len(a)):        
        print(b, end=', ');
        b = b+a[i];
    print(b);
    print('\n');
	
>>> 
14, 22, 15, 45, 36, 16, 20
#12.
24/8 = 3.0 
#13.
43-36 = 7 16+50 = 66 0/2 = 0.0 10+30 = 40 28+8 = 36 24-9 = 15 </span>

14:57:22, [机器小伟]解答结束，共解答练习十四至练习十九。
星历2015年12月25日 14:58:34, [机器小伟]说：[阿伟大人]，好没劲，贴图太啰嗦，不贴
又不好看，这一堆堆的数字，谁愿意看！

本节到此结束，欲知后事如何，请看下回分解。