二年级上乘法口算练习题(苏教填空专项练习)
如何治理雾霾-小学四年级奥数题
5×( )＝ 30 ( )×7＝35
( )×8＝ 40 ( )×6＝30
(
)×6＝ 48 ( )×7＝ 14
8×(
)＝64 8×( )＝56
( )×6＝18 (
)×7＝ 21
( )×8＝24 ( )×7＝28
8×( )＝8 ( )×2＝ 16
8×( )＝ 32 8×( )＝48
4×(
)＝24 ( )×7＝ 28
4×( )＝
16 4×( )＝12
( )×1＝ 5
( )×2＝ 10
( )×6＝42 (
)×7＝ 49
4×( )＝ 20 (
)×5＝25
4×( )＝ 12 ( )
( )×3＝ 15 5
( )×8＝ 56
7
3×( )＝ 9 3
2×( )＝ 10
( )
4×( )＝ 12 ( )
3×(
)＝ 3 3
×4＝16
×( )＝30
×(
)＝56
×( )＝12
×5＝ 15
×2＝ 8
×( )＝ 9
6×( )＝ 30
( )×5＝ 35
2×( )＝ 16 (
)×9＝18
( )×1＝ 12 ( )×2＝ 12
( )×5＝40 6
( )×6＝ 12
( )
( )×8＝48 ( )
(
)×1＝7 7
( )×1＝5
5
( )×3＝ 21 7
( )×3＝18
( )
( )×6＝24 ( )
×(
)＝30
×7＝ 14
×6＝36
×( )＝14
×( )＝10
×( )＝28
×4＝24
×7＝28
6×( )＝ 36 ( )×2＝16
( )×8＝24 ( )×5＝15
(
)×1＝9 ( )×2＝14
6×( )＝ 18
( )
( )×8＝32 ( )
(
)×6＝48 ( )
( )×3＝15 (
)
7×( )＝21 ( )
( )×6＝12
( )
( )×6＝48 ( )
(
)×8＝64 ( )
×4＝24
×7＝28
×7＝56
×4＝20
×4＝28
×7＝14
×7＝56
×4＝32
7×(
)＝ 7 7×( )＝14
5×( )＝40
5×( )＝45
6×( )＝48 6×( )＝42
( )×3＝21 ( )
( )×5＝30
( )
( )×6＝36 ( )
5×(
)＝30 5
( )×1＝9 9
7×(
)＝42 7
( )×3＝27 ( )
7×( )＝56 7
×4＝28
×5＝35
×7＝42
×( )＝35
×( )＝18
×( )＝49
×4＝36
×( )＝63
2×( )＝10 3×( )＝15
9×( )＝72 ( )×9＝81
9×(
)＝54 ( )×7＝63
7×( )＝21
( )
4×( )＝20 5
3×( )＝18
3
6×( )＝ 6 6
8×( )＝40
( )
3×( )＝24 ( )
(
)×3＝18 ( )
( )×6＝42 7
×4＝28
×( )＝25
×( )＝21
×( )＝12
×5＝45
×9＝27
×4＝24
×( )＝49