问题 解答题

(1)9.36+3.65+0.64

(2)1.3×(8.1-5.6)

(3)7.2×9.8+0.2×7.2

(4)6.3×1.5-2.92.

答案

(1)9.36+3.65+0.64,

=9.36+0.64+3.65,

=10+3.65,

=13.65;

(2)1.3×(8.1-5.6),

=1.3×2.5,

=3.25;

(3)7.2×9.8+0.2×7.2,

=7.2×(9.8+0.2),

=7.2×10,

=72;

(4)6.3×1.5-2.92,

=9.45-2.92,

=6.53;

单项选择题
单项选择题