Los Angeles County Office of Education
Assessment for the California Mathematics Standards Grade 3
Assess scholars' knowledge with a 22-page assessment that covers place value, patterns, probability, estimation, measurement, geometric figures; and their ability to add, subtract, multiply and divide proficiently.
Curriculum Corner
Academic Math Vocabulary
The ABCs of math are so important. Find commonly used math terms in a 42-page packet. Each page has the word, a place to write the definition, and a place to give specific examples of the term. A must-have for all math classrooms!
Curated OER
Sunshine Math- 2 Earth, XI
In this math applications learning exercise, students solve 7 story problems that include: estimating, money, patterns and calendars.
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Write Nearby Tens
In this rounding to the nearest ten worksheet, students read numbers and write the nearby tens in the box next to them. Students solve 20 problems.
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Estimate and Count
For this estimating and counting worksheet, students observe pictures of items in boxes, estimate and record the total amount, and then count and record the total. Students solve 4 problems.
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Estimate High and Low: Compatible Numbers
In this estimation worksheet, students read about compatible numbers and complete a chart, estimating quotients and determining if estimations were "over or under." Students then answer questions related to the chart.
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Equal Estimates- Decimals
In this decimal estimation worksheet, students estimate a set of addition and subtraction problems, rounding to the nearest whole number, then place each problem in the box that contains its estimated sum or difference.
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Estimate the Sum
In this estimating learning exercise, students round numbers to the nearest ten and estimate sums in a total of 9 problems. Answers are included on page 2.
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Estimate the Sum
In this rounding to find the sums worksheet, students round to the nearest thousandths and add. Students solve nine problems.
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Estimate Division
In this estimate division worksheet, students estimate by rounding each number in a division problem to the nearest ten. Answers are included on page 2.
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About What Time?
In this telling time worksheet, students use clocks to tell time to the nearest quarter of an hour. In this fill in the blank worksheet, students write answers to six problems.
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Customary Units of Length
In this customary length learning exercise, students solve 4 problems where they must choose the better estimate of length. Students solve 12 problems where they must compare, convert and order customary lengths.
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Estimating and Measuring Length in Metric Units
In this metric measurement worksheet, students estimate lengths of items in centimeters, then use rulers to check estimates.
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Multiplication of Decimals
In this multiplication of decimals instructional activity, students problem solve twenty five equations that deal with multiplication of decimals and rounding answers to the nearest whole number.
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Measuring Spider Web Angles
In this mathematics worksheet, students identify that the spiders each used a different angle to create their webs. Then they find out each spider's angle by estimating and measuring.
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Measure to the Nearest Inch: Practice
In this measuring worksheet, students practice measuring length to the nearest inch by first estimating and then measuring the illustrated objects. In the second set, students use a ruler to measure the given lengths and draw a line for...
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Money and Change
In this money and change worksheet, students read about multiplying with money, then solve 4 problems, estimating first. Students then study 3 charts and write number sentences.
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Weight
In this estimating weights of objects worksheet, students observe objects, estimate the metric measurements, and choose the best answer. Students solve 9 problems.
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Estimated Distances
In this estimating distances worksheet, students examine a mileage table and respond to 6 questions that require them to use their subtraction skills.
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Round to the Nearest Thousand
For this rounding worksheet, students round a set of 10 numbers to the nearest thousand. A website reference for additional resources is given.
Math Mammoth
Measuring Length: Metric
In this mathematics worksheet, 3rd graders draw lines for each measurement. Then they measure the lines to the nearest centimeter. Students also use a ruler, a measuring tape, and measure small items and longer items.
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Round Each Number to the Nearest 100
In this math activity, students round 3 digit numbers to the nearest 100. In the chart students analyze the 3 digit number, check whether it should be rounded up or down, then write the rounded number.
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Numbers - Round Up to the Nearest Thousand
In this number sense learning exercise, 3rd graders round up 10 numbers to the nearest thousands. They round numbers in the hundreds, thousands. and ten thousands.
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Find the Missing Products
In this multiplication worksheet, students solve 40 problems in which two and three digit numbers are multiplied by single digits. Students are encouraged to use estimation to do mental math. This page is intended as an online activity,...
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