standard_description: Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
problem_activity: Task
Jillian says
I know that 20 times 7 is 140 and if I take away 2 sevens that leaves 126. So 126 $\div$ 7 = 18.
Is Jillian's calculation correct? Explain.
Draw a picture showing Jillian's reasoning.
Use Jillian's method to find 222 $\div$ 6.


aligns: no