1+0.98-0.96-0.94+0.92+0.90-0.88-0.86+……+0.08+0.06-0.04-0.02=
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1+0.98-0.96-0.94+0.92+0.90-0.88-0.86+……+0.08+0.06-0.04-0.02=
1+0.98-0.96-0.94+0.92+0.90-0.88-0.86+……+0.08+0.06-0.04-0.02
=1+(0.98-0.96-0.94+0.92)+(0.90-0.88-0.86+0.84)……+0.08)+(0.06-0.04-0.02)
=1+0+0……+0
=1
=1+(0.98-0.96-0.94+0.92)+(0.90-0.88-0.86+0.84)……+0.08)+(0.06-0.04-0.02)
=1+0+0……+0
=1
1+0.99-0.98-0.97+0.96+0.95-0.94-0.93+…+0.08+0.07-0.06-0.05+0
01+0.02+0.03+0.04+…+0.96+0.97+0.98+0.99=
1+0.99-0.98-0.97+0.96+0.95-0.94-0.93+...+0.04+0.03-0.02-0.01
1+0.99-0.98-0.97+0.96+0.95-0.94-0.93+.+0.04+0.03-0.02-0.01=(
0.01+ 0.02 +0.03 +0.04 +0.05+ 0.06 +. 0.94+ 0.95+ 0.96 +0.97
9999*7778*3333*6666 0.02+0.04+0.06+.0.96+0.98
+0.99-0.98-0.97+0.96+0.95-0.94-0.93+.+0.08+0.07-0.06-0.05+0.
0.99-0.98-0.97+0.96+0.95-0.94-0.93+...+0.04+0.03-0.02-0.01(简
小数加减法的简便计算1+0.99-0.98-0.97+0.96+0.95-0.94-0.93+...+0.04+0.03
0.01+0.02+0.03+0.04+……+0.97+0.98+0.99+1=?
1-0.01-0.02-0.03-0.04-0.05-0.06-0.07-0.08-0.09用简便方法计算
一道简单的巧算题1+0.99-0.98-0.97+0.96+0.95-0,94-0.93+……+0.04+0.03-0.