When choosing a strategy to solving math problems, I always encourage students choose a strategy that:
1- Makes Sense: Can you explain and show your strategy in way that someone else can understand?
2- Is Accurate: Does the answer make sense and is it correct?
3- Efficient: Can you solve the problem in a reasonable amount of time and effort?
For challenging subtraction problems, those with large numbers and regrouping, students have developed these strategies:
Double the number x2
Double and Double again x4
Double, Double again, Double again x8
Double + 1 set x3
Clock fact, Half Decade Fact x5
Clock fact + 1 set x6
Decade Fact x10
Decade -1 set x9
Division Basic Fact Strategies:
Half fact ÷2 divide the number into two equal halves
Half, half again, ÷4 divide the number into two equal halves, then in half again
Half, half, half again ÷8 divide the number into two equal halves, then in half again, and one more time
When listening to your child read aloud, ask the following questions when they make a mistake to strengthen their ability to self-monitor their reading.
*If your child says, “Yes,” reread the sentence the way they read it and ask the question again.
Click on the left to see a list of books just for boys, or a list just for girls in third grade to read.
Click on the attachment for directions on how to find this resource.