| 计算。 | ||||||
|
(1)762﹣357+438﹣243
=(762+438)﹣(357+243)
=1200﹣600
=600
(2)(
+
﹣
)
=(
+
﹣
)×36
=
×36+
×36﹣
×36
=18 (3)(200.6×365+2006×63.5)×40%
=(200.6×365+200.6×635)×40%
=(365+635)×200.6×40%
=1000×200.6×0.4
=200600×0.4
=80240
(4)
=(4+
)×5+(32+
)×
+0.25×4×31
=4×5+
×5+32×
+
×
+1×31
=60
(5)(0.5+
+
÷1.25)÷(
﹣1.25×
)
=(0.5+
+2.5)÷(
﹣2)
=(0.5+2.5+
)÷(
﹣2)
=(3
)÷3
=1 (6)
=(1﹣
)+(
﹣
)+(
﹣
)+…+(
﹣
)
=1﹣
+
﹣
+
﹣
+…﹣
+
﹣
=1﹣
=
关注公众号回复:奥数答案
即可免费获得密码查看答案

总人数
运动员人数
六(1)班
56
32
六(2)班
58
33
六(3)班
61
34
(1)六(1)班运动员人数占全班人数的( )%。[ ]
a. 50%