Question

840除以35乘以6等于多少?用递等式计算，还要用简便计算。

Answer 1

840/35*6
=（840/7）/5*6
120/5*6

=24*6
=144

Answer 2

840÷35×6=24×6=144

Answer 3

145

Answer 4

840÷35×6
=12×70÷35×6
=12×2×6
=12×12
=144

Answer 5

840÷35×6
=24×6
=144