Lesson 1Use efficient addition strategies to calculate
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- Lesson 2
Combine tens and ones within equations
1 2 1 - Lesson 3
Add two-digit numbers without crossing the tens boundary
1 2 1 - Lesson 4
Find the missing addend when adding two-digit numbers
1 2 1 - Lesson 5
Add 2-digit numbers when crossing the tens boundary
1 2 1 - Lesson 6
Solve problems involving the addition of two-digit numbers
1 2 1 - Lesson 7
Explain different strategies used to subtract
1 2 1 - Lesson 8
Solve equations involving the subtraction of two-digit numbers
1 2 1 - Lesson 9
Solve problems involving subtraction of two-digit numbers
1 2 1 - Lesson 10
Subtract two-digit numbers crossing the tens boundary
1 2 1 - Lesson 11
Find the missing part when subtracting two-digit numbers
1 2 1 - Lesson 12
Solve problems involving subtraction when bridging 10
1 2 1 - Lesson 13
Use efficient methods to solve subtraction equations
1 2 1 - Lesson 14
Solve problems involving addition and subtraction
1 2 1 - Lesson 15
Create addition and subtraction problems
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