Add $7.99 + 4.53 + 0.01 + 0.47$

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Solution

Step 1: Combine the pair of decimal numbers that make a whole number
$\begin{array}{rcl} 7.99 + 4.53 + 0.01 + 0.47 & = & (7.99 + 0.01) + (4.53 + 0.47) \end{array}$
Step 2: Add each pair to find the sum.
$\begin{array}{rcl} 7.99 + 4.53 + 0.01 + 0.47 & = & (7.99 + 0.01) + (4.53 + 0.47) \\ = & 8 + 5 \\ = & 13 \end{array}$
Hence, $7.99 + 4.53 + 0.01 + 0.47 = 13$

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Add: $4.5, 16.024, 7.99$

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0. ¯ ¯ ¯ 7 + 0.4 ¯ ¯ ¯ 7

What is the place value of 5 in 4.53 ?

\sqrt{5.38 \times 0.47}

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