2.NBT.4/NUMBERS AND OPERATIONS IN BASE TEN

MATH DOMAIN / 2.NBT.4/NUMBERS AND OPERATIONS IN BASE TEN
Grade 2
Math Cluster / Math Standard / Mathematic Practices
Understand place value. / 2.NBT.4 Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using the symbols for greater than, equal, and less than to record the results of comparisons. / 2. Reason abstractly and quantitatively.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
Reporting Standard / Trimester 1 / Trimester 2 / Trimester 3
Base Ten: Understands place value and base-10 models to 1000. / Taught to mastery
(tested) / Review
(tested) / Review
(tested)
Task Analysis
1.NBT.3 Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols for greater than, equal , and less than.
Learning Tasks:
v  When comparing numbers, digits are assessed from hundreds first, then tens, and ones.
2.NBT.4 Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using the symbols for greater than, equal, and less than to record the results of comparisons.
Vocabulary
Prior / Explicit
·  Compare
·  Greater than, >
·  Less than, <
·  Equal to, = / ·  Compare
·  Greater than, >
·  Less than, <
·  Equal to, =
2.NBT.4 Sample Assessment Items earning a “3” in the reporting system
v  Compare the numbers and use the symbol <, >, or =.

v  Compare the numbers use the <, >, or = symbols with the numbers below.
156_____516 102______201
v  90+ 200 + 3 ______146
v  one hundred twenty-five______two hundred fifteen
v  Sarah has 725 beads. Anna has 452 beads. Who has the least number of beads?
Assessment Rubric
1 / No evidence of a strategy.
2 / Evidence that the student used a correct strategy but answered incorrectly. OR The student answered correctly with no evidence of strategy.
3 / Evidence that the student used a correct strategy, and correct equation, and answered correctly.
4 / On a level 4 question: Evidence that the student used a correct strategy, and correct equation, and answered correctly.
1.NBT.4 Sample Assessment Items earning a “4” in the reporting system
v  Jose read online that for $5 he could send away for two thousand, five hundred three cards. On another website, he saw that he could buy two thousand, fifty-three cards for $5. Jose wanted to buy the larger amount of cards.
·  Write the number telling how many cards he bought.
·  Write in expanded notation how many cards he bought.

3 | Page