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;