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Making Math Sense Vol. 2

Math tips for parents

In our last blog we began a series of Larry Martinek’s 9 Math Tips for Parents Grades K-5.  This week we are going to share with you his second tip and it’s about grouping.  Grouping expands children’s thinking processes and working through these problems mentally helps them “see” groups. Grouping can be a powerful tool for understanding numbers and developing number sense.

Ask your student/child:

  • “7 and how much more make 10?” “70 and how much more make 100?” “700 and how much more make 1,000?”
  • “10 and how much more make 15?” “10 and how much more make 18?” “10 and how much more make 25?”
  • “17 and how much more make 20?” “87 and how much more make 100?” “667 and how much more make 1,000?”
  • “How far is it from 6 to 10?” “How far is it from 89 to 100?” “How far is it from 678 to 1,000?”
  • “How many 10s are there in 70?...100?...200?...340?...500?...1,000?...10,000?...1,000,000? A quadrillion (there are 15 zeros)?”
  • “How many 4-person teams can you make out of 12 kids?...20 kids?...100 kids?...50 kids?”
  • “How much is 5, four times?...ten times?...a hundred times?...a thousand times?”

Notice how these questions focus on the number 10, multiples of 10, and powers of 10.  These exercises can all be done by mentally, and do not require students to do pencil-and-paper computations. 

Good luck, and let us know if you have any questions- we are always happy to help you love math!- We do! 

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