28 is 2 tens plus 8 ones. Select another way to make 28. \(28 \, = \, 2 \, \times \, 10 \, + \, 8\)

\(1 \, tens \, plus \, 18 \, ones\)

\(3 \, tens \, plus \, 8 \, ones\)

\(8 \, tens \, plus \, 2 \, ones\)

\(1 \, tens \, plus \, 18 \, ones\)

\(18 \, tens \, plus \, 1 \, ones\)

21 is 2 tens plus 1 ones. Select another way to make 21. \(21 \, = \, 2 \, \times \, 10 \, + \, 1\)

\(1 \, tens \, plus \, 11 \, ones\)

\(11 \, tens \, plus \, 1 \, ones\)

\(3 \, tens \, plus \, 1 \, ones\)

\(1 \, tens \, plus \, 2 \, ones\)

22 is 2 tens plus 2 ones. Select another way to make 22. \(22 \, = \, 2 \, \times \, 10 \, + \, 2\)

\(1 \, tens \, plus \, 12 \, ones\)

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

\(12 \, tens \, plus \, 1 \, ones\)

\(1 \, tens \, plus \, 12 \, ones\)

\(2 \, tens \, plus \, 2 \, ones\)

Math Games

Number Properties

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Mathematics Florida Standards

Grade 1 - Number and Operations in Base Ten

Standard 1.NBT.2.2.d - Make a specific number by regrouping tens and ones.

Included Skills: Number Properties

Understand that the two digits of a two-digit number represent amounts of tens and ones. Decompose two-digit numbers in multiple ways (e.g., 64 can be decomposed into 6 tens and 4 ones or into 5 tens and 14 ones).