This is a collection of free math videos for 5th grade, showing varied exercises for each topic. They match Math Mammoth Grade 5 curriculum but will also work no matter which curriculum you follow (in other words, the videos don't rely on you having Math Mammoth curriculum).
Please choose a topic from the list. I will expand the list as I'm able to edit and upload more videos.
Review: Addition and Subtraction – this lesson uses bar models for addition and subtraction equations, plus teaches some math terms related to addition and subtraction
Review: Multiplication and Division – simple equations, bar models, terminology
Long division with a twodigit divisor
Long division as continued (repeated) subtraction
(Introduction to primes — as a review from 4th grade)
Prime factorization using factor trees
Adding and subtracting large numbers
Example: finding powers of 7 with a calculator
Examples of calculator usage: word problems
Problem solving with bar models 1: fractional part of a whole
Problem solving with bar models 2: a word problem where total and difference are given
Problem solving with bar models 3
Problem solving with bar models 4
Decimal place value and adding decimals, up to 2 decimal digits
Decimal place value (to thousandths)
Fractions to decimals, and comparing decimals — up to 3 decimal digits (thousandths)
Add & subtract decimals using mental math
Long division with decimals, plus fractions to decimals
Numerical patterns in the coordinate grid
Drawing a histogram and a double bar graph
Multiplying decimals by decimals: the shortcut
Multiplying decimals and whole numbers: scaling
Divide decimals with mental math, part 1: sharing divisions (wholenumber divisor)
Divide decimals with mental math, part 2: divisor is a decimal
Multiply and divide decimals by powers of ten
Decimal division: problem solving
Decimals in measuring units — introduction
Basics of the metric system and the prefixes
Rounding and estimating with measurements
Mixed numbers to fractions and vice versa
Add and subtract like fractions
Add mixed numbers (like fractional parts)
Subtract mixed numbers (like fractional parts)
Adding & subtracting mixed numbers
See also: Add and subtract fractions – online practice
Multiply fractions by whole numbers
Multiply fractions by fractions
Fraction multiplication and area
Simplifying before multiplying
Multiplication as scaling/resizing
Reciprocal numbers and the shortcut for fraction division
How to divide fractions & reciprocal numbers
Draw a square with a given side, and copy a triangle
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