standard_description: Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Grade 4 expectations in this domain are limited to whole numbers less than or equal to 1,000,000.
problem_activity: Problem 1
Solve.
a.
$$380\div10=$$
________
b.
$$4,820 \times \frac{1}{10}=$$
________
Problem 2
Explain what happened to the value of the 8 in both problems in #1.


aligns: no