Question

数学六年级计算题 能简便计算的简便计算 就4道！！

(5)[(13 +25 )÷2]×511 (6)735+24×207

(7)0.234÷(0.9-0.25) (8)37.5×2.5+2.5×2.5

Answer 1

(5)[(13 +25 )÷2]×511
=38÷2×511
=19×511
=9709
(6)735+24×207
=735+4968
=5703
(7)0.234÷(0.9-0.25)
=0.234÷0.65
=0.36
(8)37.5×2.5+2.5×2.5
=2.5×（37.5+2.5）
=2.5×40
=25×4
=100

Answer 2

（5）原式＝（38÷2）×511
＝19×511
＝9709
（6）原式＝735+4968
＝5703
（7）原式＝0.234÷0.65
＝0.36
（8）原式＝2.5×（37.5+2.5）
＝2.5×40
＝100