脱式计算.(怎样简便怎样算).不要光等得数,(1)64×1.25 (2)9.83+0÷9.83-9.83(3)6666×9+1111×46 (4)518×27.5+48.2×275(5)1+99+3+97+5+95…+49+51———————————————— 25个100
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![脱式计算.(怎样简便怎样算).不要光等得数,(1)64×1.25 (2)9.83+0÷9.83-9.83(3)6666×9+1111×46 (4)518×27.5+48.2×275(5)1+99+3+97+5+95…+49+51———————————————— 25个100](/uploads/image/z/5018058-18-8.jpg?t=%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97.%28%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E6%80%8E%E6%A0%B7%E7%AE%97%29.%E4%B8%8D%E8%A6%81%E5%85%89%E7%AD%89%E5%BE%97%E6%95%B0%2C%281%2964%C3%971.25+%282%299.83%EF%BC%8B0%C3%B79.83%EF%BC%8D9.83%283%296666%C3%979%EF%BC%8B1111%C3%9746+%284%29518%C3%9727.5%EF%BC%8B48.2%C3%97275%285%291%EF%BC%8B99%EF%BC%8B3%EF%BC%8B97%EF%BC%8B5%EF%BC%8B95%E2%80%A6%EF%BC%8B49%EF%BC%8B51%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94+25%E4%B8%AA100)
脱式计算.(怎样简便怎样算).不要光等得数,(1)64×1.25 (2)9.83+0÷9.83-9.83(3)6666×9+1111×46 (4)518×27.5+48.2×275(5)1+99+3+97+5+95…+49+51———————————————— 25个100
脱式计算.(怎样简便怎样算).不要光等得数,
(1)64×1.25 (2)9.83+0÷9.83-9.83
(3)6666×9+1111×46 (4)518×27.5+48.2×275
(5)1+99+3+97+5+95…+49+51
————————————————
25个100
脱式计算.(怎样简便怎样算).不要光等得数,(1)64×1.25 (2)9.83+0÷9.83-9.83(3)6666×9+1111×46 (4)518×27.5+48.2×275(5)1+99+3+97+5+95…+49+51———————————————— 25个100
(1)64×1.25
=8×8×1.25
=8×10
=80
(2)9.83+0÷9.83-9.83
=(9.83-9.83)+0÷9.83
=0+0
=0
(3)6666×9+1111×46
=1111×6×9+1111×46
=1111×54+1111×46
=1111×(54+46)
=1111×100
=111100
(4)518×27.5+48.2×275
=51.8×275+48.2×275
=(51.8+48.2)×275
=51.8×100
=5180
(5)1+99+3+97+5+95+……+49+51
=25×100
=2500
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(1)64×1.25 =8×(8×1.25)=8×10=80(2)9.83+0÷9.83-9.83=9.83-9.83=0
(3)6666×9+1111×46=1111×6×9+1111×46=1111×(54+46)=1111×100=111100 (4)518×27.5+48.2×2...
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(1)64×1.25 =8×(8×1.25)=8×10=80(2)9.83+0÷9.83-9.83=9.83-9.83=0
(3)6666×9+1111×46=1111×6×9+1111×46=1111×(54+46)=1111×100=111100 (4)518×27.5+48.2×275=51.8×275+48.2×275=(51.8+48.2)×275=100×275=27500
(5)1+99+3+97+5+95…+49+51
————————————————
25个100=25×100=2500
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