Grade 3 Standards
Number Sense and Operations Strand
Students engage in problem solving, communicating, reasoning, connecting, and representing as they:
an understanding of the values of the digits in the base ten number
system by reading, modeling, writing, comparing, and ordering whole
numbers through 9,999.
Represent, order, and compare numbers through 9,999. Represent
numbers using expanded notation (e.g., 853 = 8 x 100 + 5 x 10 + 3), and
written out in words (e.g., eight hundred fifty-three).
Identify and represent fractions (between 0 and 1 with
denominators through 10) as parts of unit wholes and parts of groups.
Model and represent a mixed number (with denominator 2, 3, or 4) as a
whole number and a fraction, e.g., 1 2/3, 3 1/2.
3.N.4 Locate on the number line and compare fractions (between 0 and 1 with denominators 2, 3, or 4, e.g., 2/3).
Recognize classes to which a number may belong (odd numbers, even
numbers, and multiples of numbers through 10). Identify the numbers in
those classes, e.g., the class of multiples of 7 between 1 and 29
consists of 7, 14, 21, 28.
use, and explain various meanings and models of multiplication (through
10 x 10). Relate multiplication problems to corresponding division
problems, e.g., draw a model to represent 5 x 6 and 30 ÷ 6.
3.N.7 Use the
commutative (order) and identity properties of addition and
multiplication on whole numbers in computations and problem situations,
e.g., 3 + 4 + 7 = 3 + 7 + 4 = 10 + 4.
and use appropriate operations (addition, subtraction, multiplication,
and division) to solve problems, including those involving money.
This standard is intentionally the same as standard 4.N.10.
multiplication facts through 10 x 10 and related division facts, e.g.,
9 x 8 = 72 and 72 ÷ 9 = 8. Use these facts to solve related problems,
e.g., 3 x 5 is related to 3 x 50.
and subtract (up to four-digit numbers) and multiply (up to two-digit
numbers by a one-digit number) accurately and efficiently.
3.N.11 Round whole numbers through 1,000 to the nearest 10, 100, and 1,000.
Understand and use the strategies of rounding and regrouping to
estimate quantities, measures, and the results of whole-number
computations (addition, subtraction, and multiplication) up to
two-digit whole numbers and amounts of money to $100, and to judge the
reasonableness of the answer.
concrete objects and visual models to add and subtract (only when the
answer is greater than or equal to zero) common fractions (halves,
thirds, fourths, sixths, and eighths) with like denominators.