Wyoming Math 1.NBT.4d
The Standard
Add within 100, using concrete models or drawings and strategies based on place value: Relate the strategy to a written method and explain the reasoning used.
2023 Wyoming Mathematics Content and Performance Standards · Use place value understanding and properties of operations to add and subtract.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students add two numbers with a sum no greater than 100. They use tens and ones blocks or drawings, trade ten ones for a ten when needed, and write a matching equation.
What Mastery Looks Like
- For 27 + 35, a student shows 5 tens and 12 ones, then trades 10 ones for a ten. They write 20 + 30 + 7 + 5 = 62 and explain where the sixth ten came from.
Common Misconceptions
- Students may write 512 for 27 + 35, joining 5 tens and 12 ones without making a new ten. Others make the trade with blocks but leave it out of their written work.
How to Assess It
- Give students 36 + 27. Ask them to draw tens and ones, write a matching equation, and circle the ten they made from ones.
Lesson moves
Ways to Teach It
Give pairs base-ten rods and cubes to build 27 + 35, trade ten cubes for a rod, then write a matching equation.
Show 46 + 28 = 614 and ask, 'What happened to the ones, and how would you fix the answer?'
Play three-card match with cards showing 27 + 35, a base-ten drawing, and 20 + 30 + 7 + 5 = 62.
A class collected 38 cans Monday and 24 Tuesday; have students draw tens and ones and write an equation for the total.
Free download
Printable 1.NBT.4d Worksheet
A ready-to-print activity worksheet aligned to 1.NBT.4d, 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
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.
Also for this standard:Make a WorksheetMake a QuizMake a Sub Lesson