计算。(1)762﹣357+438﹣243(2)(+﹣)(3)(200.6×365+2006×63.5)×40%(4)(5)(0.5++÷1.25)÷(﹣1.25×)(6)-六年级数学

题文

计算。
(1)762﹣357+438﹣243 (2)(+
(3)(200.6×365+2006×63.5)×40% (4)
(5)(0.5++÷1.25)÷(﹣1.25× (6)
题型:判断题  难度:中档

答案

(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
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