4.54+2.68÷1.6-3.08 16.27-﹙5.45+6.27﹚ 4分之3×6分之7-5分之2÷3分之24.54+2.68÷1.6-3.0816.27-﹙5.45+6.27﹚4分之3×6分之7-5分之2÷3分之2210÷[3.14+4.5×﹙1.2-1.12﹚]8×9分之5×125×10分之9用简便算法做能简便就简便

问题描述:

4.54+2.68÷1.6-3.08 16.27-﹙5.45+6.27﹚ 4分之3×6分之7-5分之2÷3分之2
4.54+2.68÷1.6-3.08
16.27-﹙5.45+6.27﹚
4分之3×6分之7-5分之2÷3分之2
210÷[3.14+4.5×﹙1.2-1.12﹚]
8×9分之5×125×10分之9
用简便算法做能简便就简便

4.54+2.68÷1.6-3.08
=4.54+1.675-3.08
=3.135
16.27-﹙5.45+6.27﹚
=16.27-6.27-5.45
=10-5.45
=4.55
3/4×7/6-2/5÷(2/3)
=3/4×7/6-2/5×3/2
=7/8-3/5
=11/40
210÷[3.14+4.5×(1.2-1.12)]
=210÷[3.14+4.5×0.08]
=210÷(3.14+0.36)
=210÷3.5
=60
8×5/9×125×9/10
=(125×8)×(5/9×9/10)
=1000×1/2
=500

4.54+2.68÷1.6-3.08=4.54+1.675-3.08=3.13516.27-﹙5.45+6.27﹚=16.27-6.27-5.45=10-5.45=4.554分之3×6分之7-5分之2÷3分之2=8分之7-5分之3=40分之11210÷[3.14+4.5×﹙1.2-1.12﹚]=210÷(3.14+4.5×0.08)=21...