standard_description: Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.)
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