standard_description: Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
- The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
- The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
- 10 can be thought of as a bundle of ten ones — called a “ten.”
problem_activity: Problem 2
Pre-unit
Write \(<\), \(=\), or \(>\) in each box to make the statement true.
\(90 + 5\) \(\,\boxed{\phantom{\frac{aaai}{aaai}}}\,\) \(70 + 10 + 10 + 10 + 5\)
\(116\) \(\,\boxed{\phantom{\frac{aaai}{aaai}}}\,\) \(100 + 10 + 6\)
\(10 + 10 + 20 + 3\) \(\,\boxed{\phantom{\frac{aaai}{aaai}}}\,\) \(38\)


aligns: no