【练口算】小学数学1——6年级口算专项练习(111),提高计算能力!
发布于 2021-03-29 05:48 ，所属分类：在线教育信息快讯
计算技巧
▲ 进位加法的简单计算方法
不管多大的数相加其最基本的原则都是20以内的加法原则，20以内进位加法的速算口诀为：几加九进十减一、几加八进十减二、几加七进十减三、几加六进十减四 。
▲ 退位减法的简答计算方法
100以内数的退位减法也是以20以内数的退位减法为基础的，退位减法的速算口诀为：几减九退十加一、几减八退十加二、几减七退十加三、几减六退十加四、几减五退十加五、几减四退十加六、几减三退十加七、几减二退十加八、几减一退十加九。
练习
45-35= | 29+24= |
48+27= | 60-29= |
1+35= | 31-20= |
94-25= | 23+41 = |
43+1 = | 68+6= |
97—7= | 50+23= |
25+58= | 49+25= |
47-6= | 5+91 = |
61-55= | 15+77= |
60+6= | 2+61 = |
29+71 = | 12+17= |
51-33= | 68+20= |
94-39= | 47-29= |
41-11 = | 86-73= |
97-38= | 97-34= |
11+66= | 73+26= |
9+57= | 94-54= |
97-62= | 2+81 = |
44-37= | 43+53= |
69+31 = | 8+6= |
55-54= | 87-34= |
73-37= | 62-3= |
84-50= | 79-68= |
13+84= | 17+46= |
13-4= | 39+55= |
16+71 = | 74-33= |
94-81 = | 94-47= |
51-11 = | 64-11 = |
76-14= | 65-50= |
90-38= | 88-10= |
43+23= | 65+12= |
62+3= | 43+41 = |
63-24= | 20+33= |
56+14= | 92-49= |
81+1 = | 19+76= |
19+10= | 98-86= |
96-41 = | 65+2= |
25+10= | 80+1 = |
100-89= | 84-10= |
61+9= | 57-19= |
9+16= | 75+13= |
4+35= | 66-45= |
12+2= | 21+25= |
16+68= | 27+34= |
46-4= | 83-35= |
58-33= | 71-58= |
50-42= | 90+3= |
73+15= | 68-52= |
49+30= | 43-30= |
43-27= | 80-54= |
20+75= | 79-56= |
99-29= | 36+64= |
19+56= | 7+35= |
33+55= | 34+8= |
35+46= | 59-36= |
34+13= | 59-27= |
59-13= | 67+19= |
99-22= | 20+16= |
98-63= | 64+17= |
49+31 = | 37+55= |
91+2= | 78+11 = |
92—40= | 17+43= |
86-26= | 98-92= |
54-46= | 81-9= |
69—3= | 16+43= |
74-70= | 58+13= |
79-68= | 92+3= |
45+21 = | 63-39= |
11-6= | 65-39= |
23+36= | 62+12= |
23+28= | 83-35= |
90+9= | 27-12= |
25+75= | 35+27= |
10+34= | 65-17= |
84+3= | 57-46= |
57+31 = | 45+45= |
79-65= | 34+65= |
84-38= | 72—4= |
87-31 = | 41-21 = |
60+22= | 35+53= |
50+9= | 60+16= |
56—6= | 15-11 = |
68-57= | 90-5= |
96-90= | 81+2= |
15+83= | 18+3= |
81+14= | 71-69= |
47+34= | 50+36= |
99-65= | 27+71 = |
32+65= | 82+6= |
19+12= | 55-21 = |
48+18= | 98-25= |
45-35= | 7+46= |
74+24= | 25+6= |
87-16= | 65-4= |
93-13= | 7+61 = |
46-41 = | 53+3= |
58-47= | 31+4= |
38-20= | 76-65= |
95-14= | 68-55= |
57+5= | 15+42= |
50-24= | 32+14= |
68-26= | 12+76= |
42+49= | 69-30= |
67-56= | 20+59= |
86+12= | 55-15= |
100-10= | 19+49= |
48-16= | 98-11 = |
64-42= | 31-3= |
39+28= | 9+2= |
14+13= | 58+29= |
17+59= | 54+25= |
28+34= | 35+35= |
21+37= | 60+6= |
66+30= | 29-14= |
98-96= | 48+7= |
38+38= | 80-33= |
33+41 = | 75-63= |
84-53= | 84-31 = |
82-50= | 93-21 = |
2+45= | 23+64= |
16+21 = | 58-46= |
34-18= | 59+5= |
5+31 = | 11+46= |
25+73= | 57+35= |
75-29= | 68-25= |
32+49= | 59-35= |
14+3= | 2+3= |
76-57= | 28+28= |
27+69= | 48+16= |
65-17= | 70-47= |
52-1 = | 27+39= |
1+81 = | 76-58= |
90+6= | 61-3= |
51-27= | 89-56= |
12+52= | 87+3= |
72+7= | 87-72= |
21+55= | 62+26= |
71+25= | 75+24= |
20+55= | 24+43= |
57-44= | 74-55= |
83-22= | 1+18= |
46-28= | 100-57= |
66+34= | 76-65= |
29+68= | 75-14= |
50+20= | 10+32= |
86—38= | 62+32= |
92—58= | 78-15= |
11+87= | 50+16= |
91-73= | 76+4= |
44+5= | 100-56= |
41+34= | 36+49= |
20+20= | 45+13= |
65+24= | 13+55= |
4+20= | 59-54= |
45+40= | 4-1 = |
49+49= | 84+1 = |
25+45= | 3+67= |
84-71= | 54+46= |
80—66= | 52-11= |
80-70= | 33-9= |
33+25= | 58-8= |
93-68= | 12+7= |
31+27= | 58+16= |
99-71 = | 53—4= |
51-3= | 23-10= |
99-14= | 21+35= |
4+76= | 48+7= |
20+53= | 2+55= |
75—6= | 44-31= |
9+23= | 59+3= |
52+28= | 16-14= |
37+47= | 30+41= |
61 — 48= | 67+12= |
7+36= | 65-21= |
33-15= | 23+24= |
61-25= | 8+72= |
52—5= | 9+54= |
27+68= | 51 — 49= |
62-61 = | 32-1 = |
90-89= | 92-83= |
16+84= | 39-13= |
45+55= | 81-2= |
68+15= | 74—49= |
45+17= | 69-29= |
91-25= | 83+7= |
79+8= | 64-32= |
59+37= | 48-29= |
4+54= | 39-36= |
68-9= | 8+91 = |
57+15= | 89-53= |
94-34= | 6+67= |
90-33= | 55+5= |
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