$4×2=$ $6×2=$ $5×4=$
$2×4=$ $2×6=$ $4×5=$
$4 + 4=$ $2 + 2 + 2 + 2 + 2 + 2=$ $5 + 5 + 5 + 5=$
$2×4=$ $2×6=$ $4×5=$
$4 + 4=$ $2 + 2 + 2 + 2 + 2 + 2=$ $5 + 5 + 5 + 5=$
答案
8
12
20
8
12
20
8
12
20
12
20
8
12
20
8
12
20
$2×2=$ $4×3=$ $6×3=$ $4×5 - 3=$
$3×3=$ $1×6=$ $3 + 2=$ $1×4 + 2=$
$5×3=$ $4×6=$ $5×2=$ $6×4 + 5=$
$2×3=$ $3 + 4=$ $5×5=$ $6×6 - 6=$
$3×3=$ $1×6=$ $3 + 2=$ $1×4 + 2=$
$5×3=$ $4×6=$ $5×2=$ $6×4 + 5=$
$2×3=$ $3 + 4=$ $5×5=$ $6×6 - 6=$
答案
4
12
18
17
9
6
5
6
15
24
10
29
6
7
25
30
12
18
17
9
6
5
6
15
24
10
29
6
7
25
30
1. 填一填。
$□×3 = 15$ $5×□ = 30$ $3×□ + 2 = 14$
$4×□ = 8$ $6×□ = 12$ $□×6 - 3 = 21$
$2×□ = 10$ $□×5 = 25$ $40 - □×6 = 4$
$□×3 = 15$ $5×□ = 30$ $3×□ + 2 = 14$
$4×□ = 8$ $6×□ = 12$ $□×6 - 3 = 21$
$2×□ = 10$ $□×5 = 25$ $40 - □×6 = 4$
答案
5
6
4
2
2
4
5
5
6
6
4
2
2
4
5
5
6
2. 比一比。
$1×4◯1 + 4$ $4×3◯3×4$ $1×6◯2×6 - 6$
$3×3◯3 + 3$ $2×5◯3×4$ $5×5◯4×5 + 5$
$4×6◯5×4$ $2×5◯3×3$ $5×2 - 2◯4×2$
$1×4◯1 + 4$ $4×3◯3×4$ $1×6◯2×6 - 6$
$3×3◯3 + 3$ $2×5◯3×4$ $5×5◯4×5 + 5$
$4×6◯5×4$ $2×5◯3×3$ $5×2 - 2◯4×2$
答案
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