Question

Use the order of operations to simplify this expression 1.2x3.5x4.1= What

Answer 1

`1.2*3.5*4.1=[(1+0.2)(3+0.5)](4+0.1)`

$=[1\times3+1\times0.5+0.2\times3+0.2\times0.5](4+0.1)$

$=(3+0.5+0.6+0.1)(4+0.1)$

$=(4.2)(4+0.1)=(4+0.2)(4+0.1)$

$=4\times4+4\times0.1+0.2\times4+0.2\times0.1$

$=16+0.4+0.8+0.02=17.22$