题目内容
【题目】计算,能简算的要简算。
560+1440÷12×5×
+
×
[1-
+
)]÷
5.8×99+5.8 +
+
+
……+
【答案】1160
580
【解析】
560+1440÷12×5
=560+120×5
=560+600
=1160
×
+
×
=( +
)×
=1×
=
[1-(+
)]÷
=(1- )÷
= ÷
=
5.8×99+5.8
=5.8×(99+1)
=5.8×100
=580
+
+
+
……+
= +
×
+
×
+
×
+……+
×
= ×(1+
+
+
+……+
)
= ×(1+
+
+
+……+
)×256÷256
= ×(256+128+64+32+16+8+4+2+1)÷256
= ×511×
=

练习册系列答案
相关题目