计算下面各题(能简算的要简算). 17×25×8 73×18+82×73 6756-193-207 183-25-75+117 64×101 326×
计算下面各题(能简算的要简算).17×25×873×18+82×736756-193-207183-25-75+11764×101326×124-326×24....
计算下面各题(能简算的要简算). 17×25×8 73×18+82×73 6756-193-207 183-25-75+117 64×101 326×124-326×24.
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(1)17×25×8, =17×25×4×2, =17×2×(25×4), =34×100, =3400; (2)73×18+82×73, =73×(18+82), =73×100, =7300; (3)6756-193-207, =6756-(193+207), =6756-400, =6356; (4)183-25-75+117, =183+117-(25+75), =300-100, =200; (5)64×101, =64×(100+1), =6400+64, =6464; (6)326×124-326×24, =326×(124-24), =326×100, =32600. |
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