题目内容
脱式计算 8.9×2.7×1.1 |
8.25×3.4+6.9 | 8.95×36-40.74 |
12.8×0.5+6.43 | 3.9×5.4-2.84 | 22-1.6×6. |
分析:(1)按照从左向右的顺序进行计算;
(2)先算乘法,再算加法;
(3)先算乘法,再算减法;
(4)先算乘法,再算加法;
(5)先算乘法,再算减法;
(6)先算乘法,再算减法.
(2)先算乘法,再算加法;
(3)先算乘法,再算减法;
(4)先算乘法,再算加法;
(5)先算乘法,再算减法;
(6)先算乘法,再算减法.
解答:解:(1)8.9×2.7×1.1,
=24.03×1.1,
=26.433;
(2)8.25×3.4+6.9,
=28.05+6.9,
=34.95;
(3)8.95×36-40.74,
=322.2-40.74,
=281.46;
(4)12.8×0.5+6.43,
=6.4+6.43,
=12.83;
(5)3.9×5.4-2.84,
=21.06-2.84,
=18.22;
(6)22-1.6×6,
=22-9.6,
=12.4.
=24.03×1.1,
=26.433;
(2)8.25×3.4+6.9,
=28.05+6.9,
=34.95;
(3)8.95×36-40.74,
=322.2-40.74,
=281.46;
(4)12.8×0.5+6.43,
=6.4+6.43,
=12.83;
(5)3.9×5.4-2.84,
=21.06-2.84,
=18.22;
(6)22-1.6×6,
=22-9.6,
=12.4.
点评:此题主要考查小数的四则混合运算的运算顺序,然后根据运算顺序进行计算.
练习册系列答案
相关题目