四年级下册小数加减法简便计算专项练习,附答案

20.91+0.63-0.91=20.6319.63+9.47-16.63=12.471.03+18.14-4.14=15.0317.38+6.37-10.38=13.373.86+7.17-0.86=10.174.23+19.63-18.63=5.2310.26+16.93-12.93=14.264.88+17.88-1.88=20.885.92+3.32-1.32=7.923.99+5.99-3.99=5.998.99+17.21-6.21=19.9915.46+7.37-7.46=15.376.17+17.65-4.65=19.1719.45...