Decimals Teacher Resources
Find Decimals educational ideas and activities
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Repeating Decimal as Approximation
You are used to teaching repeating decimals with bar notation that keeps us from writing that number over and over again; now teach what the over and over again represents. This activity allows your mathematicians to explore the infinite decimal and see how different calculations get us close to the original number, but not quite exactly on it.
6th - 9th Math 6 Views 4 Downloads CCSS: Designed
Mr. Khan reminds us that the most important thing to remember when subtracting decimal numbers is to line up the decimal points. He subtracts 3.600 from 9.005, explaining his thinking as he completes the process. Assign the viewing of this tutorial as homework and then have youngsters come to class ready to practice together!
2 mins 5th - 7th Math 5 Views 58 Downloads CCSS: Adaptable
Converting Decimal Representations of Rational Numbers to Fraction Representations
A rational number is a ratio of two integers. Discuss with your class how to convert the rational numbers of repeating decimals to fractions. A good commentary on letting x equal the repeating decimal and multiplying each side of such equation by a power of 10 or 10r, where r is the repeating segment.
7th - 9th Math 21 Views 26 Downloads CCSS: Designed
Multiplying decimal numbers isn't that much different than multiplying whole numbers. If you need a little extra support, this video may help. Sal shows how to multiply 23.12 by 0.5. He takes care to line up the decimal points, regroup, and place the decimal in the proper place when he finishes his computation.
3 mins 5th - 7th Math 11 Views 110 Downloads
Divide decimals. Watch as Sal explains how to divide 1.03075 by 0.25. He provides a step-by-step process that is easy to follow, clear, and well-organized. Note: This would be great for a teacher prepping for a math lesson or as supplemental material to show in class.
6 mins 5th - 7th Math 11 Views 90 Downloads
Multiplying Decimals 3
Have your young mathematicians complete this practice problem along with Sal. To solve this thinking problem, they will need to multiply decimal numbers in order to determine the cost of 14.6 gallons of gas when gas costs $2.70 per gallon.
3 mins 5th - 7th Math 5 Views 34 Downloads
Students access prior knowledge of long division and multiplying decimals. In this dividing decimals lesson, students view a demonstration of how to move decimals when dividing. Students complete a dividing decimals worksheet. Students compare decimals to fractions.
4th - 5th Math 7 Views 14 Downloads
Learners review the relationship between decimals and fractions. In this rounding decimals instructional activity, students discuss money and how you can round it out to the nearest cents, dollar or ten dollars or hundreds. Learners draw a relationship to other numbers.
4th - 5th Math 8 Views 10 Downloads
Decimals Greater Than 1
Students identify and write the decimal and fraction represented in a given model. In this fractions and decimals lesson, students write the numerical equivalent in decimal and fraction form after observing the teacher create a model with various manipulatives.
4th - 5th Math 5 Views 69 Downloads
Addition of Decimal Numbers and a Common Factor
Young scholars use video clips to help them understand decimal addition and errors in decimal equations. In this decimal addition lesson, students watch and complete several videos about decimal addition. Young scholars also complete two assessment activities of decimal addition.
4th - 7th Math 8 Views 22 Downloads
Math Lesson Plan: Comparing Decimals
How can a zero affect place value? After going over the definition of a decimal and reviewing how to convert to a fraction, the whole group works to compare numbers with decimals where the zeros are in different place values. Emphasis is placed on the fact that zeros work differently in decimals than they do in whole numbers.
5th - 6th Math 6 Views 17 Downloads
Division of Decimals
In this math learning exercise, students practice division of decimal numbers by one-digit whole number divisors. Students complete 45 examples written both horizontally and vertically. Problems are spaced close together which may make showing calculations difficult.
5th - 6th Math 6 Views 72 Downloads