题目内容
| 我会填。 4×3=12,12+7=19。→ 4×3+7 =12+7 =19
|
| (1)3×9-20 =27-20 =7 |
(2)4×5+10 =20+10 =30 |
(3)6×4+12 =24+12 =36 |
练习册系列答案
相关题目
题目内容
| 我会填。 4×3=12,12+7=19。→ 4×3+7 =12+7 =19
|
| (1)3×9-20 =27-20 =7 |
(2)4×5+10 =20+10 =30 |
(3)6×4+12 =24+12 =36 |