【题目】口算.
32×30=________ | 210×4=________ | 28×5=________ | 40×200=________ |
300×4=________ | 70×21=________ | 9×15=________ | 45÷5=________ |
【题目】口算.
32×30=________ | 210×4=________ | 28×5=________ | 40×200=________ |
300×4=________ | 70×21=________ | 9×15=________ | 45÷5=________ |