计算下面各题,能简便计算的要用简便方法计算. 296+73+104+37 1600÷25÷4 125×54-46×125 50
计算下面各题,能简便计算的要用简便方法计算.296+73+104+371600÷25÷4125×54-46×12550.34+11.645-42.34125×25×329...
计算下面各题,能简便计算的要用简便方法计算. 296+73+104+37 1600÷25÷4 125×54-46×125 50.34+11.645-42.34 125×25×32 99+99×99
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(1)296+73+104+37, =(296+104)+(73+37), =400+110, =510; (2)1600÷25÷4, =1600÷(25×4), =1600÷100, =16; (3)125×54-46×125, =125×(54-46), =125×8, =1000; (4)50.34+11.645-42.34, =50.34-42.34+11.645, =8+11.645, =19.645; (5)125×25×32, =125×25×4×8, =(125×8)×(25×4), =1000×100, =100000; (6)99+99×99, =99×(1+99), =99×100, =9900. |
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