学进去-教育应平等而普惠
试题
类型:口算和估算
难度系数:0.64
所属科目:小学数学
口算.
2×1=            2×2=             5×3=             2×4=          9×5=             5×6=
5×7=          5×4=               5×9=             7×7=            9×7=            9×6=
9×8=            9×9=             6×5=             3×8=            3×7=            3×6=
4×7=            7×9=               8×1=             8×2=        8×5=             8×4=
4×7=            4×6=               3×9=               4×8=          4×9=            8×2=
5×1=            7×6=                 4×8=             2×5=        3×1=            7×8=
6×9=             2×6=             7×1=             6×6=          9×4=               8×6=
2×1=            5×6=               4×9=            3×6=          2×8=               4×6=
5×2=             3×2=               4×2=             3×5=          8×3=               7×5=
6×2=             2×7=               7×2=             6×7=          9×2=               7×7=
2×2=            5×8=               9×7=             3×8=          3×8=               5×7=
4×4=            7×8=                 4×3=             6×5=          3×3=               8×5=
6×3=            2×8=                 7×3=            6×8=          9×5=               8×8=
4×3=            5×7=                 9×8=             6×7=          5×3=               4×8=
5×4=            3×5=                 7×9=             9×5=            9×6=             9×9=
7×4=            4×4=               3×3=             5×5=            4×5=             3×4=
8×5=          9×5=               6×3=             6×8=            4×8=             2×9=
7×6=             7×5=                 5×5=            6×9=            8×7=             9×4=
3×8=             8×9=                 2×9=            2×4=          6×5=             5×9=
4×7=             5×3=                 5×6=             3×9=            7×8=             2×4=
9×7+18=        9×9-9=               3×7-2=            8×9-17=        8×4-9=        7×7+3=
6×7-5=          3×9+8               8×7+4=
编辑解析赚收入
收藏
|
有奖纠错

同类型试题

优质答疑

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
我要答疑
编写解析
解析:

奖学金将在审核通过后自动发放到帐

提交
我要答疑
我要答疑:
提交