Question

4.54×1.2-1.69简便运算

Answer 1

4.54×1.2-1.69简便运算
4.54×1.2-1.69
=4.54*1+4.54*0.2-1.69
=4.54+0.908-1-0.7+0.07
=4.54-1+0.908-0.7+0.01
= 3.758

Answer 2

4.54x1.2-1.69
＝4.54x(1+0.2)-1-0.69
＝4.54+4.54x0.2-1-0.69
＝4.54-1+(4+0.54)x0.2-0.69
＝3.54+0.8+0.108-0.69
＝4.34+0.108-0.69
＝4.448-0.69
＝4.448-1

追答

错了

4.34+0.108-0.69
＝4.448-1+0.31
＝3.448+0.31
＝3.758

Answer 3

4.54×1.2-1.69
=4.54×（1+0.2）-1.69
=4.54×1+4.54×0.2-1.69
=4.54+0.908-1.69
=5.448-1.69
=3.758

Answer 4

4.54x1.2一|.69
=4.54x(0.2十1)一1,69
=4.54×0.2+4.54×1-1.69
=0.908+4.54-1.69
=5.448-1.69
=3.758

Answer 5

4.54×1.2-1.69

=4.54×(1+0.2)-1.69

=4.54×1+4.54×0.2-1.69

=4.54+0.908-1.69

=5.448-1.69

=3.758