Question

简便计算36.5×99-99怎么算？

Answer 1

36.5*99-99
=36.5*（100-1）-（100-1）
=36.5*100-36.5-100+1
=3650-100-36.5+1
=3550-35.5
=3514.5

Answer 2

36.5×99-99
=（36.5-1）×99
=35.5×99
=35.5×（100-1）
=3550-35.5
=3514.5

Answer 3

36.5×99-99
= 36.9 × 99 − 1 × 99
=( 36.9 − 1) × 99
= 35.9 × (100 − 1)
= 35.9 ×100−35.9×1
=3590−35.9
=3554.1

Answer 4

36.5×99-99
= 36.9 × 99 − 1 × 99
=( 36.9 − 1)× 99
= 35.9 × (100 − 1)
= 35.9 ×100−35.9×1
=3590−35.9
=3554.1

Answer 5

此题可以用乘法分配律进行简便计算
36.5x99-99
=（36.5-1）x99
=35.5x（100-1）
=35.5x100-35.5
=3550-35.5
=3514.5