One and one fourth times four and one half

$$1\frac{1}{4}*4\frac{1}{2}=$$

$$(1+\frac{1}{4})*(4+\frac{1}{2})=$$

 

Left, outer, inner, right:

 

$$4+\frac{1}{2}+1+\frac{1}{8}$$

 

Multiply(*) both the numerator (top) and the denominator (bottom) in fraction nr. 1 by 4 to get a common denominator:

 

$$4+\frac{4}{8}+1+\frac{1}{8}$$

$$5+\frac{5}{8}$$

Remember that: $$a\frac{b}{c}= \frac{ac +b}{c}$$, we get:

 

$$5\frac{5}{8}=\frac{40+5}{8}=\frac{45}{8}=5.625$$

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