Math Forum - Problems Library - Primary, Number Theory

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About Levels
of Difficulty

Primary
numeration
operations with numbers
number theory
algebraic thinking
geometry
measurement
data analysis
logical reasoning

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Primary
Problems

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PoW Library

Number Theory
These problems delve into some basic properties of numbers, including odds/evens and factors/multiples.

Related Resources
Interactive resources from our Math Tools project:
   Math 1: Number Sense
NCTM Standards:
   Number and Operations Standard for Grades Pre-K-3

Access to these problems requires a Membership.

Counting Shells -
Grade 2. Use the clues to figure out how many shells Jack has. ... more>>

Donuts on a Tray -
Grade 2. Help Glenda to figure out how to arrange snacks on a tray in equal rows. ... more>>

Laying Carpet -
Grade 2. Figure out the different sizes that LeBron´┐Żs rectangular room might be. ... more>>

Making Sandwiches -
Grade 1. Help Ricardo and Gloria divide their task as fairly as possible. ... more>>

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