4.7*3.56+2.5*3.56+6.44*7.2(简便运算)
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4.7*3.56+2.5*3.56+6.44*7.2(简便运算)
![4.7*3.56+2.5*3.56+6.44*7.2(简便运算)](/uploads/image/z/1944841-49-1.jpg?t=4.7%2A3.56%2B2.5%2A3.56%2B6.44%2A7.2%28%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%89)
4.7*3.56+2.5*3.56+6.44*7.2
=(4.7+2.5)*3.56+6.44*7.2
=7.2*3.56+6.44*7.2
=7.2*(3.56+6.44)
=7.2*10
=72
=(4.7+2.5)*3.56+6.44*7.2
=7.2*3.56+6.44*7.2
=7.2*(3.56+6.44)
=7.2*10
=72