Convert 19 to tens and ones. \(19 \, = \, 1 \, \times \, 10 \, + \, 9\)

\(1 \, ten \, + \, 19 \, ones\)

\(19 \, tens \, + \, 9 \, ones\)

Convert 25 to tens and ones. \(25 \, = \, 2 \, \times \, 10 \, + \, 5\)

\(2 \, tens \, + \, 5 \, ones\)

\(5 \, tens \, + \, 2 \, ones\)

\(2 \, tens \, + \, 25 \, ones\)

\(25 \, tens \, + \, 5 \, ones\)

\(2 \, tens \, + \, 5 \, ones\)

\(2 \, tens \, + \, 3 \, ones\)

\(2 \, tens \, + \, 23 \, ones\)

\(3 \, tens \, + \, 2 \, ones\)

\(23 \, tens \, + \, 3 \, ones\)

Number Properties, Addition

Year 3 - Number and Algebra

Standard 3.NA.1.1 - Split the number into tens and ones to complete the equation.

Number strategies • Use a range of additive and simple multiplicative strategies with whole numbers, fractions, decimals, and percentages.