Tenths and Hundredths

4.NF.5

“Express a fraction with denominator 10 as an equivalent fraction with denominator 100, and use this technique to add two fractions with respective denominators 10 and 100. For example, express 3/10 as 30/100, and add 3/10 + 4/100 = 34/100.”

The conversion column in Part 1 and all four mixed-denominator sums in Part 2, which use the standard's own 3/10 + 4/100 example as the printed strategy tip.

4.NF.6

“Use decimal notation for fractions with denominators 10 or 100. For example, rewrite 0.62 as 62/100; describe a length as 0.62 meters; locate 0.62 on a number line diagram.”

The decimal column in Part 1 and the decimal forms the ribbon problem demands in question 15a.

4.NF.7

“Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.”

The six comparisons in Part 3 and the 0.7-versus-0.68 ribbon comparison.