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Basic Addition |
Arithmetic |
8 min |
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Addition 2 |
Arithmetic |
12 min |
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Level 2 Addition |
Arithmetic |
10 min |
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Addition 3 |
Arithmetic |
9 min |
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Addition 4 |
Arithmetic |
9 min |
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Basic Subtraction |
Arithmetic |
9 min |
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Subtraction 2 |
Arithmetic |
13 min |
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Subtraction 3: Introduction to Borrowing or Regrouping |
Arithmetic |
18 min |
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Alternate mental subtraction method |
Arithmetic |
5 min |
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Why borrowing works |
Arithmetic |
9 min |
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Level 4 Subtraction |
Arithmetic |
9 min |
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Why borrowing works |
Arithmetic |
9 min |
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Adding Decimals |
Arithmetic |
8 min |
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Subtracting decimals |
Arithmetic |
9 min |
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Basic Multiplication |
Arithmetic |
13 min |
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Multiplication 2: The Multiplication Tables |
Arithmetic |
15 min |
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Multiplication 3: 10,11,12 times tables |
Arithmetic |
12 min |
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Multiplication 4: 2-digit times 1-digit number |
Arithmetic |
12 min |
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Multiplication 5: 2-digit times a 2-digit number |
Arithmetic |
11 min |
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Multiplication 6: Multiple Digit Numbers |
Arithmetic |
10 min |
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Multiplication 7: Old video giving more examples |
Arithmetic |
6 min |
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Mulitplication 8: Multiplying decimals (Old video) |
Arithmetic |
10 min |
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Lattice Multiplication |
Arithmetic |
7 min |
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Why Lattice Multiplication Works |
Arithmetic |
8 min |
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Division 1 |
Arithmetic |
17 min |
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Division 2 |
Arithmetic |
12 min |
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Division 3: More long division and remainder examples |
Arithmetic |
10 min |
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Level 4 division |
Arithmetic |
10 min |
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Converting fractions to decimals |
Arithmetic |
9 min |
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Percent and decimals |
Arithmetic |
10 min |
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Dividing decimal |
Arithmetic |
9 min |
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Ordering numeric expressions |
Arithmetic |
9 min |
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Greatest Common Divisor |
Arithmetic |
6 min |
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Least Common Multiple |
Arithmetic |
4 min |
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Equivalent fractions |
Arithmetic |
6 min |
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Mixed numbers and improper fractions |
Arithmetic |
9 min |
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