
(1)794-198. (2)68×25. (3)6756-193-207. (4)72×125. (5)97×360+3×360
(1)794-198.(2)68×25.(3)6756-193-207.(4)72×125.(5)97×360+3×360....
(1)794-198. (2)68×25. (3)6756-193-207. (4)72×125. (5)97×360+3×360.
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(1)794-198, =794-200+2, =594+2, =596; (2)68×25, =17×4×25, =17×(4×25), =17×100, =1700; (3)6756-193-207, =6756-(193+207), =6756-400, =6356; (4)72×125, =9×8×125, =9×(8×125), =9×1000, =9000; (5)97×360+3×360, =360×(97+3), =360×100, =36000. |
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