Mental Estimation with Real Numbers in Daily Life
Use mental estimation to make quick decisions about quantities in everyday situations.

Use mental estimation to make quick decisions about quantities in everyday situations.
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5 lessons
Identify and explain even and odd numbers using pairs, and mentally find 10 or 100 more/less and estimate quantities in everyday situations.
apply mathematics to problems arising in everyday life, society, and the workplace;
select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems;
display, explain, and justify mathematical ideas and arguments using precise mathematical language in written or oral communication.