1简便计算.0.99*39 8.52*9.9+0.852 1.25*2.7/*0.82;列式计算.⑴5.6与0.7的和,乘1与0.4的差,积是多少?⑵比2.4多1.2的数,除以1.6的一半,商是多少?简便计算0.99*39 8.52*9.9+0.852 1.25*2.7*0.8
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![1简便计算.0.99*39 8.52*9.9+0.852 1.25*2.7/*0.82;列式计算.⑴5.6与0.7的和,乘1与0.4的差,积是多少?⑵比2.4多1.2的数,除以1.6的一半,商是多少?简便计算0.99*39 8.52*9.9+0.852 1.25*2.7*0.8](/uploads/image/z/54610-34-0.jpg?t=1%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97.0.99%2A39+8.52%2A9.9%2B0.852+1.25%2A2.7%2F%2A0.82%EF%BC%9B%E5%88%97%E5%BC%8F%E8%AE%A1%E7%AE%97.%E2%91%B45.6%E4%B8%8E0.7%E7%9A%84%E5%92%8C%2C%E4%B9%981%E4%B8%8E0.4%E7%9A%84%E5%B7%AE%2C%E7%A7%AF%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E2%91%B5%E6%AF%942.4%E5%A4%9A1.2%E7%9A%84%E6%95%B0%2C%E9%99%A4%E4%BB%A51.6%E7%9A%84%E4%B8%80%E5%8D%8A%2C%E5%95%86%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%970.99%2A39+8.52%2A9.9%2B0.852+1.25%2A2.7%2A0.8)
1简便计算.0.99*39 8.52*9.9+0.852 1.25*2.7/*0.82;列式计算.⑴5.6与0.7的和,乘1与0.4的差,积是多少?⑵比2.4多1.2的数,除以1.6的一半,商是多少?简便计算0.99*39 8.52*9.9+0.852 1.25*2.7*0.8
1简便计算.0.99*39 8.52*9.9+0.852 1.25*2.7/*0.8
2;列式计算.
⑴5.6与0.7的和,乘1与0.4的差,积是多少?
⑵比2.4多1.2的数,除以1.6的一半,商是多少?
简便计算
0.99*39 8.52*9.9+0.852 1.25*2.7*0.8
1简便计算.0.99*39 8.52*9.9+0.852 1.25*2.7/*0.82;列式计算.⑴5.6与0.7的和,乘1与0.4的差,积是多少?⑵比2.4多1.2的数,除以1.6的一半,商是多少?简便计算0.99*39 8.52*9.9+0.852 1.25*2.7*0.8
0.99*39=1*39-0.39=38.61
8.52*9.9+0.852=0.852*100=85.2
1.25*2.7*0.8=1.25*0.8*2.7=2.7
⑴5.6与0.7的和,乘1与0.4的差,积是多少?
(5.6+0.7)*(1-0.4)=3.78
⑵比2.4多1.2的数,除以1.6的一半,商是多少?
(2.4+1.2)÷(1.6/2)=4.5
0.99*39=(1-0.01)*39=39-0.39=38.61
8.52*9.9+0.852=8.52*(9.9+0.1)=85.2
1.25*2.7*0.8 =1.25*0.8*2.7=1*2.7=2.7
2.(1)(5.6+0.7)*(1-0.4)=6.3*0.6=3.78
(2)(2.4+1.2)/(1.6/2)=4.5
你得去海量医院
0.99*39=(40-1)*(1-0.01)=40-1-0.4+0.01=38.61
8.52*9.9+0.852=8.52*(9.9+0.1)=85.2
1.25*2.7*0.8=(1.25*0.8)*2.7=1*2.7=2.7
(5.6+0.7)*(1-0.4)=6.3*0.6=3.78
(2.4+1.2)/(1.6/2)=4.5