Colorado CMAS · Math · Grade 3
Build Grade 3 Math readiness with five focused 10-question practice sets covering numbers, operations, multiplication, fractions, measurement, data, and geometry.
This Colorado CMAS Grade 3 Math Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets offer supplemental practice across place value, operations, multiplication, division, fractions, measurement, data, area, and geometry.
Complete one 10-question set at a time. Identify the operation or model, solve carefully, and review every explanation before moving to the next set.
This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Colorado Department of Education guidance, official CMAS blueprints, accommodations, or testing policies.
For the Colorado assessment hub, visit Colorado State Assessments.
1. Test
A 10-question Colorado CMAS Grade 3 Math practice set on place value and number sense, with answers and explanations.
Read each math task carefully, choose one answer, and review the explanation after responding.
Please select an answer first.
Correct answer: A
The correct answer is 600.
The digit 6 is in the hundreds place, so its value is 600.
Please select an answer first.
Correct answer: B
The correct answer is 7,405.
Comparing thousands, hundreds, tens, and ones shows that 7,405 is greatest.
Please select an answer first.
Correct answer: C
The correct answer is 5,328.
The expanded form represents 5 thousands, 3 hundreds, 2 tens, and 8 ones.
Please select an answer first.
Correct answer: D
The correct answer is 500.
The tens digit is 8, so 486 rounds up to 500.
Please select an answer first.
Correct answer: A
The correct answer is 3,219 > 3,129.
Both numbers have 3 thousands; 2 hundreds is greater than 1 hundred.
Please select an answer first.
Correct answer: B
The correct answer is 300.
The digit 3 is in the hundreds place, so it represents 300.
Please select an answer first.
Correct answer: C
The correct answer is 8,407.
The place values combine to make 8,407.
Please select an answer first.
Correct answer: D
The correct answer is 2,750.
The ones digit is 1, so the number rounds down to 2,750.
Please select an answer first.
Correct answer: A
The correct answer is 1,908.
Comparing the hundreds and tens places shows that 1,809 is least.
Please select an answer first.
Correct answer: B
The correct answer is 9,075.
The expression has 9 thousands, 0 hundreds, 7 tens, and 5 ones.
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Use focused study intervals to work through your next practice set.
The page covers place value, operations, multiplication, division, fractions, measurement, data, area, geometry, and mathematical reasoning.
There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.
No. These are original supplemental practice questions. Check the latest Colorado Department of Education information for official materials, standards, accommodations, and policies.
