早教吧作业答案频道 -->数学-->
98.6x98.6-98.5x98.7的简便运算
题目详情
98.6x98.6-98.5x98.7的简便运算
▼优质解答
答案和解析
98.6x98.6-98.5x98.7
=98.6x98.6-(98.6-0.1)x(98.6+0.1)
=98.6x98.6-(98.6x98.6-0.1×0.1)
=98.6x98.6-98.6x98.6+0.01
=0.01
=98.6x98.6-(98.6-0.1)x(98.6+0.1)
=98.6x98.6-(98.6x98.6-0.1×0.1)
=98.6x98.6-98.6x98.6+0.01
=0.01
看了 98.6x98.6-98.5...的网友还看了以下:
口算下列各题2×40=60÷2=96÷3=3.8-1.2=13×30=180÷6=26×3=7.2 2020-04-07 …
递等式计算(能简算的要简算)7.6/(1.9*25)(2.5-1/1.25)*0.833.98-5 2020-05-16 …
78+46+22=200÷25=56÷4-16÷4=600×50=180×30=300-300÷3 2020-05-17 …
找规律100.2.98.4.94.7.88.找规律100.2.98.4.94.7.88怎么算, 2020-07-17 …
把98-91=7868÷7=12431×124=3844合并成一道综合算式是()A.868÷(98 2020-07-18 …
28×9≈32×4≈57×3≈12×7≈38×9≈42×8≈98×4≈63×7≈51×2≈214× 2020-07-19 …
那个方程组,怎么弄不好,能不能具体点嗯?要显示为9*9=819*8=729*7=639*6=549 2020-07-28 …
几个同学的50米短跑成绩如下:8.01秒、7.51秒、7.98秒、7.89秒、8.20秒、8.17秒 2020-11-26 …
星星水果批发市场采购了1吨葡萄.这1吨葡萄在新疆测得含水率为98%,运抵杭州后测得含水率为96%,则 2021-02-01 …
填上大于小于或等于:5/8÷4○5/84/9×5/7○4/98/15×8/7○8/157/12÷3/ 2021-02-04 …