2100÷15-40x3的简便运算怎么算?

2024-12-13 01:33:41
推荐回答(4个)
回答1:


回答2:

2100÷15-40x3
=2100÷(3x5)-40x3
=2100÷3÷5-120
=700÷5-120
=140-120
=20

回答3:

2100÷15-40×3
=2100÷3÷5-40×3
=700÷5-40×3
=140-120
=20

回答4:

=140+120
=20