问题 解答题

脱式计算

62×74+62×53

74×(201-37)-356

(950-400)÷5+158

400+88×13-1048.

答案

(1)62×74+62×53

=62×(74+53)

=62×127

=7874;

(2)74×(201-37)-356

=74×164-356

=12136-356

=11780;

(3)(950-400)÷5+158

=550÷5+158

=110+158

=268;

(4)400+88×13-1048

=400+1144-1048

=1544-1048

=496.

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