Understand additive relationships and apply them to rearrange equations
Why this, why now
In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 9 / 20
Understand additive relationships and apply them to rearrange equations
In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship.
10 lessons- Develop understanding of the relationship between addition and subtraction
- Solve problems using bar charts, pictograms and tables
- Identify knowns and unknowns in addition equations
- Use the additive relationship to rearrange subtraction equations
- Use the additive relationship to rearrange addition equations
- Understand why the order of addition and subtraction steps can be chosen
- Identify knowns and unknowns in subtraction equations
- Solve one and two-step problems in different contexts
- Use the additive relationship to rearrange and solve equations
- Solve multi-step addition and subtraction problems efficiently