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+48×3126×45÷(85-46)125.3-27.44-12.567200÷25÷42.95+23.47+5.05+6.530.25×32×

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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