问题 解答题

脱式计算.

800-120×6

(515+206)÷7

240×4+210

950÷5÷2.

答案

(1)800-120×6,

=800-720,

=80;

(2)(515+206)÷7,

=721÷7,

=103;

(3)240×4+210,

=960+210,

=1170;

(4)950÷5÷2,

=950÷(5×2),

=950÷10,

=95.

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