Florida B.E.S.T. MA.5.NSO.1

Math5th Grade

B.E.S.T. Standard (Benchmark Cluster)

Understand the place value of multi-digit numbers with decimals to the thousandths place.

Florida B.E.S.T. Standards for Mathematics

Cluster contents

MA.5.NSO.1 is a B.E.S.T. standard. These are the benchmarks under it.

Teacher's field guide

What Students Need to Do: Students identify the place and value of digits in whole numbers and decimals through thousandths. They read, write, model, and break apart these numbers using place-value relationships.
What Mastery Looks Like: Students correctly read, write, and model numbers through thousandths. They can explain that each place is ten times the value of the place to its right.
Common Misconceptions: Students may think more decimal digits always make a number larger. They may confuse tenths, hundredths, and thousandths or ignore zeros used as placeholders.
How to Assess It: Give students 47.306. Ask them to name the place and value of each decimal digit, then write the number in expanded form.

Lesson moves

Have students place digit cards on a labeled place-value mat, then read the number and write its expanded form.
Ask students to explain why 4.205 and 4.25 are different, including what the zero does.
Roll dice to build decimals through thousandths, then compare numbers with a partner and score one point for each correct comparison.
Give three race times measured to thousandths and have students order them, then identify the value of a chosen digit.

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