口算:35×57=34+23=512×910=25×7+35×7=37×149=0×35=4×13÷4×13=(3+215)×15=
口算: 35×= | += | ×= | ×7+×7= |
×= | 0×= | 4×÷4×= | (3+)×15= |
口算: 35×= | += | ×= | ×7+×7= |
×= | 0×= | 4×÷4×= | (3+)×15= |
口算: 35×= | += | ×= | ×7+×7= |
口算: 35×= | 35×=5 |
5 | 7 |
7 | += | +=3 |
3 | 4 |
4 | 2 |
2 | 3 |
3 | ×= | ×=5 |
5 | 12 |
12 | 9 |
9 | 10 |
10 | ×7+×7= | ×7+×7=2 |
2 | 5 |
5 | 3 |
3 | 5 |
5 | ×= | 0×= | 4×÷4×= | (3+)×15= |
×= | ×=3 |
3 | 7 |
7 | 14 |
14 | 9 |
9 | 0×= | 0×=3 |
3 | 5 |
5 | 4×÷4×= | 4×÷4×=1 |
1 | 3 |
3 | 1 |
1 | 3 |
3 | (3+)×15= | (3+)×15=2 |
2 | 15 |
15 |
答案和解析
35×=25, | +=, | ×=, | ×7+×7=7, |
×=, | 0×=0, | 4×÷4×=, | (3+)×15=47. |
35×=25, | +=, | ×=, | ×7+×7=7, |
35×=25, | 35×=25,35×
5 |
5 | 5
7 |
7 | 7=25,
+=, | +=,3 |
3 | 3
4 |
4 | 4+
2 |
2 | 2
3 |
3 | 3=
,17 |
17 | 17
12 |
12 | 12,
×=, | ×=,5 |
5 | 5
12 |
12 | 12×
9 |
9 | 9
10 |
10 | 10=
,3 |
3 | 3
8 |
8 | 8,
×7+×7=7, | ×7+×7=7,2 |
2 | 2
5 |
5 | 5×7+
3 |
3 | 3
5 |
5 | 5×7=7,
×=, | 0×=0, | 4×÷4×=, | (3+)×15=47. |
×=, | ×=,3 |
3 | 3
7 |
7 | 7×
14 |
14 | 14
9 |
9 | 9=
,2 |
2 | 2
3 |
3 | 3,
0×=0, | 0×=0,0×
3 |
3 | 3
5 |
5 | 5=0,
4×÷4×=, | 4×÷4×=,4×
1 |
1 | 1
3 |
3 | 3÷4×
1 |
1 | 1
3 |
3 | 3=
,1 |
1 | 1
9 |
9 | 9,
(3+)×15=47. | (3+)×15=47.(3+
2 |
2 | 2
15 |
15 | 15)×15=47.
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