估算,再笔算,309乘以6

Question

估算,再笔算,309乘以6

Answer 1

估算:
309×6≈1800
一
300追答

笔算:3 0 9
x 6
一一一一
1 8 5 4

Answer 2

309≈3OO
3O9X6≈3OOX6=18OO
309X6=1854

Answer 3

309×6
≈300×6
=1800
309×6
=(300+9)×6
=300×6+9×6
=1800+54
=1854本回答被网友采纳