问题 解答题

1785÷17+98

(3.2+6.8÷0.17)×2.5

1.7×4.8+5.2×1.7

8.3+1.9-5.3+4.6.

答案

(1)1785÷17+98,

=105+98,

=203;

(2)(3.2+6.8÷0.17)×2.5,

=(3.2+40)×2.5,

=43.2×2.5,

=108;

(3)1.7×4.8+5.2×1.7,

=1.7×(4.8+5.2),

=1.7×10,

=17;

(4)8.3+1.9-5.3+4.6,

=(8.3-5.3)+(1.9+4.6),

=3+6.5,

=9.5.

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