standard_description: Add and subtract within 1000, 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. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
problem_activity: Solve. Show or explain your work.
a.   4.62 ÷ 0.07
b.   51.2 ÷ 0.08
c.   2.91 ÷ 0.6


aligns: no