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Arithmetic

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Video Tutorials

249

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Course content

249 Lessons

Addition and subtraction

Basic addition and subtraction
Basic addition
Basic subtraction
Addition and subtraction within 20
Adding 8 + 7
Subtracting 14 – 6
Strategies for adding and subtracting within 100
Adding 53+17 by making a group of 10
Adding by making a group of 10
Strategies for adding 2-digit numbers
Addition and subtraction with number lines
Addition within 100
Adding 2-digit numbers without regrouping 2
Adding with regrouping
Subtraction within 100
Subtracting 2-digit numbers without regrouping 1
Subtracting with regrouping (borrowing)
Multi-digit addition with regrouping
Using place value to add 3-digit numbers: part 2
Adding 3-digit numbers
Relate place value to standard algorithm for multi-digit addition
Adding multi-digit numbers: 48,029+233,930
Three digit addition word problems
Multi-digit subtraction with regrouping
Methods for subtracting 3-digit numbers
Relate place value to standard algorithm for multi-digit subtraction
Worked example: Subtracting 3-digit numbers (regrouping)
Worked example: Subtracting 3-digit numbers (regrouping twice)
Worked example: Subtracting 3-digit numbers (regrouping from 0)
Subtracting in your head (no regrouping)
Multi-digit subtraction: 389,002-76,151
Subtraction by breaking apart
Missing number for 3-digit subtraction within 1000
Three digit subtraction word problems

Multiplication and division

Negative numbers

Fractions

Decimals

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62 Courses

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