Question

【题目】132-1.05÷10.5+27

[4.75+8.4÷（9.2-6.8）]×40

Answer 1

【答案】132-1.05÷10.5+27

=132-0.1+27

=132+27-0.1

=159-0.1

=158.9

[4.75+8.4÷（9.2-6.8）]×40

=[4.75+8.4÷2.4]×40

=[4.75+3.5]×40

=8.25×40

=（8+0.25）×40

=8×40+0.25×40

=320+10

=330

【解析】先算括号内的乘法，再算括号内的减法，最后算括号外的，先算称出后算加减。