Florida B.E.S.T. MA.5.NSO.1.2
The Standard
Read and write multi-digit numbers with decimals to the thousandths using standard form, word form and expanded form.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students move among numeral notation, number names, and place-value sums for numbers that include thousandths. They identify each digit’s value, including zeros used as placeholders.
What Mastery Looks Like
- A student can change 508.072 into a number name and a place-value sum without changing its value. They preserve placeholder zeros and name each decimal place correctly.
Common Misconceptions
- Students may ignore placeholder zeros, so they read 4.006 as 4.6. They may also confuse tenths, hundredths, and thousandths or use “and” before the whole-number part.
How to Assess It
- Exit ticket: Write “seven hundred two and forty-five thousandths” as a numeral and as a place-value sum.
Lesson moves
Ways to Teach It
Give pairs digit cards and a place-value mat; call out 42.307, then have them build it and record two other forms.
Ask, “How are 6.04 and 6.004 different?” Students write a claim using place-value names, then compare explanations with a partner.
Use matching cards showing numerals, number names, and expanded sums; teams race to assemble complete sets and justify each match.
Show race times recorded to thousandths; students write each time in words and expanded form, then identify the fastest runner.
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Printable MA.5.NSO.1.2 Worksheet
A ready-to-print activity worksheet aligned to MA.5.NSO.1.2, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MA.2.NSO.1.1
Read and write numbers from 0 to 1,000 using standard form, expanded form and word form.
- MA.3.NSO.1.1
Read and write numbers from 0 to 10,000 using standard form, expanded form and word form.
- MA.6.NSO.2.1
Multiply and divide positive multi-digit numbers with decimals to the thousandths, including using a standard algorithm with procedural fluency.
- MA.4.NSO.1.2
Read and write multi-digit whole numbers from 0 to 1,000,000 using standard form, expanded form and word form.
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