计算下面各题,这样简便就怎样算.(要递等式)48×69+48×31 26×45÷(85-46) 125.3-27.44-12.567200÷25÷4 2.95+23.47+5.05+6.53 0.25×32×12.5
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![计算下面各题,这样简便就怎样算.(要递等式)48×69+48×31 26×45÷(85-46) 125.3-27.44-12.567200÷25÷4 2.95+23.47+5.05+6.53 0.25×32×12.5](/uploads/image/z/379325-29-5.jpg?t=%E8%AE%A1%E7%AE%97%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%2C%E8%BF%99%E6%A0%B7%E7%AE%80%E4%BE%BF%E5%B0%B1%E6%80%8E%E6%A0%B7%E7%AE%97.%EF%BC%88%E8%A6%81%E9%80%92%E7%AD%89%E5%BC%8F%EF%BC%8948%C3%9769%2B48%C3%9731+26%C3%9745%C3%B7%EF%BC%8885-46%EF%BC%89+125.3-27.44-12.567200%C3%B725%C3%B74+2.95%2B23.47%2B5.05%2B6.53+0.25%C3%9732%C3%9712.5)
计算下面各题,这样简便就怎样算.(要递等式)48×69+48×31 26×45÷(85-46) 125.3-27.44-12.567200÷25÷4 2.95+23.47+5.05+6.53 0.25×32×12.5
计算下面各题,这样简便就怎样算.(要递等式)
48×69+48×31 26×45÷(85-46) 125.3-27.44-12.56
7200÷25÷4 2.95+23.47+5.05+6.53 0.25×32×12.5
计算下面各题,这样简便就怎样算.(要递等式)48×69+48×31 26×45÷(85-46) 125.3-27.44-12.567200÷25÷4 2.95+23.47+5.05+6.53 0.25×32×12.5
48×69+48×31
=48×(69+31)
=48×100
=4800
26×45÷(85-46)
=26×45÷39
=26÷13×(45÷3)
=2×15
=30
125.3-27.44-12.56
=125.3-(27.44+12.56)
=125.3-40
=85.3
7200÷25÷4
=7200÷(25×4)
=7200÷100
=72
2.95+23.47+5.05+6.53
=(2.85+5.05)+(23.47+6.53)
=8+30
=38
0.25×32×12.5
=(0.25×4)×(12.5×8)
=100
48×69+48×31
=48×(69+31)
=48×100
=4800
26×45÷(85-46)
=13×2×15×3÷(3×13)
=2×15
=30
125.3-27.44-12.56
=125.3-(27.44+12.56)
=125.3-40
=85.3
720...
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48×69+48×31
=48×(69+31)
=48×100
=4800
26×45÷(85-46)
=13×2×15×3÷(3×13)
=2×15
=30
125.3-27.44-12.56
=125.3-(27.44+12.56)
=125.3-40
=85.3
7200÷25÷4
=7200÷(4×25)
=72
2.95+23.47+5.05+6.53
=2.95+5.05+23.47+6.53
=8+30=38
0.25×32×12.5
=0.25×4×8×12.5
=1×100
=100
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