1. 口算。
4+6= _
2+6= _
3+5= _
6+4= _
7-5= _
7-4= _
8-4= _
2+7= _
10-3= _
6-4= _
9-0= _
4+3= _
4+6= _
2+6= _
3+5= _
6+4= _
7-5= _
7-4= _
8-4= _
2+7= _
10-3= _
6-4= _
9-0= _
4+3= _
答案
分析:题目考查的是基础的加减法口算。
答案:
4 + 6 = 10
2 + 6 = 8
3 + 5 = 8
6 + 4 = 10
7 - 5 = 2
7 - 4 = 3
8 - 4 = 4
2 + 7 = 9
10 - 3 = 7
6 - 4 = 2
9 - 0 = 9
4 + 3 = 7
答案:
4 + 6 = 10
2 + 6 = 8
3 + 5 = 8
6 + 4 = 10
7 - 5 = 2
7 - 4 = 3
8 - 4 = 4
2 + 7 = 9
10 - 3 = 7
6 - 4 = 2
9 - 0 = 9
4 + 3 = 7
2. 在□里填上合适的数。
6+□= 7
5+□= 10
1+□= 5
6+□= 10
3+□= 9
5+□= 8
4+□= 6
5+□= 9
2+□= 7
6+□= 7
5+□= 10
1+□= 5
6+□= 10
3+□= 9
5+□= 8
4+□= 6
5+□= 9
2+□= 7
答案
解析:这些题目都是基础的加法运算题目,需要在空格(□)中填入合适的数,使得等式成立。我们可以通过简单的减法来找到答案。
答案:
6 + □ = 7,□ = 7 - 6 = 1
5 + □ = 10,□ = 10 - 5 = 5
1 + □ = 5,□ = 5 - 1 = 4
6 + □ = 10,□ = 10 - 6 = 4
3 + □ = 9,□ = 9 - 3 = 6
5 + □ = 8,□ = 8 - 5 = 3
4 + □ = 6,□ = 6 - 4 = 2
5 + □ = 9,□ = 9 - 5 = 4
2 + □ = 7,□ = 7 - 2 = 5
答案:
6 + □ = 7,□ = 7 - 6 = 1
5 + □ = 10,□ = 10 - 5 = 5
1 + □ = 5,□ = 5 - 1 = 4
6 + □ = 10,□ = 10 - 6 = 4
3 + □ = 9,□ = 9 - 3 = 6
5 + □ = 8,□ = 8 - 5 = 3
4 + □ = 6,□ = 6 - 4 = 2
5 + □ = 9,□ = 9 - 5 = 4
2 + □ = 7,□ = 7 - 2 = 5
3. 速算,填一填。
①10-2= _ 9-8= _ 10-5-3= _
②7+3= _ 8-6= _ 5+4-2= _
③8-3= _ 4+5= _ 5-3+6= _
①10-2= _ 9-8= _ 10-5-3= _
②7+3= _ 8-6= _ 5+4-2= _
③8-3= _ 4+5= _ 5-3+6= _
答案
解析:
题目考查的是基础的加减法运算,需要直接进行计算。
答案:
① 10-2=8,9-8=1,10-5-3=2;
② 7+3=10,8-6=2,5+4-2=7;
③ 8-3=5,4+5=9,5-3+6=8。
题目考查的是基础的加减法运算,需要直接进行计算。
答案:
① 10-2=8,9-8=1,10-5-3=2;
② 7+3=10,8-6=2,5+4-2=7;
③ 8-3=5,4+5=9,5-3+6=8。
4. 看图列式计算。
①
□○□=□(个)
②
□○□=□(条)
③
□○□=□(个)
④
□○□=□(个)
①
□○□=□(个)
②
□○□=□(条)
③
□○□=□(个)
④
□○□=□(个)
答案
①3+7=10
②10-2=8
③9-6=3
④6+3=9
②10-2=8
③9-6=3
④6+3=9
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