五年级数学速算比赛题

《五年级数学速算比赛题》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、0.4X0.7X0.252.78X8.8+2.78X2.22.44-0.2=4.8H-0.6=9.64-0.3=3.244-24=3.244-0.24=3.7X0.016二13.76X0.8=5.2X0.6二&4XI.3=6.4X0.5=二.脱式计算（冃总简算的就简算）1.25X5X87.6X8+2.4X832X125X2.5三•竖式计算（除不尽的保留两位小数）0.56X0.8=4.8X11=1.07X2.4=5.8X12=12.6^0.28=4.48X0.4=0.76X0.32=3.244-2.4=2.44

2、-2=484-0.6二9.64-0.3=0.244-0.2=二•脱式计算（能简算的就简算）6.254-0.25X668.044-(0.21X3.6)19.754-2.5-3.5517.5x2.3-7.5x2.31.25x11x4x0.8三•竖式计算（除不尽的保留两位小数）3.76X0.25=20.4一24=1.8^0.03=754-2.5=14.78-r0.666.45X0.73=4.84-0.6二4.84-6=9.6H-0.3=0.964-0.03二二•脱式计算（能简算的就简算）2.5x7.1x416.12

3、x99+16.122.44-0.2=5.2x0.94-0.926x15.7+15.7x247.28x99+7.28三•竖式计算（除不尽的保留两位小数）7.6X20.23X8.92.89X0.821.2X0.22125X0.084.6X0.6=8.9X0.05二3.08X0.43=0.9X0.8二25.84-6=22.84-3=19.764-5.2=3.814-7=二•脱式计算（能简算的就简算）4.3x50x0.264—2.64x0.5(2.2751.5X26.7=5.984-0.23=+0.625)x0.28

4、3.94+34.3x0.22.7x54x3.9三•竖式计算（除不尽的保留两位小数）7.37X2.69X67.33.25X6.880.37X5.62.6X129.5X101=3.8X10.1=7.69X101=0.32*42二14-0.5=7.09X10.8=0.8X7.09二二•脱式计算（能简算的就简算）L2x(9・6—2・4)m4・88.05x3.4+7.6&9x1.1x476.58x4.5x0.93.6x9.85-5.46三•竖式计算（除不尽的保留两位小数）6.69X0.30.93X3.976X8.335

5、.43X0.90.4X720.964-3=1.474-0.7=5.44-6=1.284-0.4=784-0.6二9.5X99二13.5X0.98二0.2X0.26=0.14X4=0.02X0.1=二•脱式计算（能简算的就简算）2.8x0.5+1.5832+4.9-0.9(1.25-0.125)x856.5x99+56.54.8-48x0.5三•竖式计算（除不尽的保留两位小数）8.324-4=5.924-1.6=0.634-0.15140.44-18=9.184-9=1.2X0.3=2.3X4=654-0.05

6、=544-0.12=324-0.4=364-0.18=424-0.003=二•脱式计算（能简算的就简算）4.8x100」4.85+0.35^1.49.5x10112.5x0.4x2.5x87.09x10.8-0.8x7.09三•竖式计算（除不尽的保留两位小数）0.1384-0.15=243.24-6.4=74-0.28=6.44-32=2164-2.7=2.5X0.4=3.99X0.1=9.64-3.2二784-0.06=814-0.03=7.24-0.002二二•脱式计算（能简算的就简算）0.87x3.16

7、+4.640.68三(5.2-3.5)x1.25&7454-0.005二x17.4-8.7x7.440"0.81xO.184.8x(15三2.4)三•竖式计算（除不尽的保留两位小数）1044-0.52=75.64-1.8=8.914-0.27=2.6x0.13=0.214-1.4=10004-1.25=1204-0.024=7.54-5=&64-0.002二0.00364-3.6二3.8X10.1=0.125X72=二•脱式计算（能简算的就简算）2.13.xO.x82576.81+6.81x996.81+6.

8、81x990.25x185x404.4x0.8—3.4x0.8(9.37+9.37+9.37+9.37)x2.5三•竖式计算（除不尽的保留两位小数）1.124-0.56=7.354-0.21=19.84-4.5=2.5x10.3=0.702x15=8.64-2=0.3X3.6=6.34-21=0.3X0.33.4X0.2=0.364-0.0006二7.54-2=二•脱式计算（能简算的就简算）4.2.