Florida B.E.S.T. MA.2.NSO.2.2
The Standard
Identify the number that is ten more, ten less, one hundred more and one hundred less than a given three-digit number.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use place value to adjust a three-digit number by groups of ten or one hundred. They record the new number, including when digits regroup across a place.
What Mastery Looks Like
- A student quickly finds each related number without counting by ones. The student handles place-value crossings correctly and explains which value changed.
Common Misconceptions
- Students may change the ones digit instead of the tens or hundreds value. They may also miss place-value crossings, such as writing 395 plus 10 as 305.
How to Assess It
- Give students 398 and ask them to write the results of adding 10, subtracting 10, adding 100, and subtracting 100.
Lesson moves
Ways to Teach It
Build 326 with base-ten blocks, then add or remove a ten rod or hundred flat and record each new number.
Ask students to explain why subtracting 10 from 402 changes more than one digit, using words, numbers, or a place-value chart.
Students draw number cards, spin +10, -10, +100, or -100, and earn a point for each correct answer.
Give a store inventory count, then add or remove cartons holding 10 or 100 items and calculate the new total.
Free download
Printable MA.2.NSO.2.2 Worksheet
A ready-to-print activity worksheet aligned to MA.2.NSO.2.2, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetKeep exploring
Related Standards
- MA.2.NSO.1
Understand the place value of three-digit numbers.
- MA.1.NSO.2.3
Identify the number that is one more, one less, ten more and ten less than a given two-digit number.
- MA.K.AR.1.1
For any number from 1 to 9, find the number that makes 10 when added to the given number.
- MA.4.NSO.2.6
Identify the number that is one-tenth more, one-tenth less, one-hundredth more and one-hundredth less than a given number.
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.