Adding and subtracting (age 10+)
Solve addition and subtraction multi-step problems in contexts, deciding which operations and methods to use and why, with numbers up to 10,000,000 and decimals
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“If your child is given a complicated word problem involving large numbers or decimals — like calculating the total cost of several items — can they plan and carry out all the steps correctly?”
Full guide and materials
- Activity. Solve addition and subtraction multi-step problems in contexts, deciding which operations and methods to use and why, with numbers up to 10,000,000 and decimals
What to notice. Solve a two-step word problem involving addition and subtraction of numbers beyond 1,000,000 • Choose between mental, written, and calculator methods for a multi-step problem and justify the choice • Interpret a real-life context to identify which addition/subtraction operations are needed across multiple steps
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If your child is given a complicated word problem involving large numbers or decimals — like calculating the total cost of several items — can they plan and carry out all the steps correctly?
Solve addition and subtraction multi-step problems in contexts, deciding which operations and methods to use and why, with numbers up to 10,000,000 and decimals
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Check understanding
- Solve a two-step word problem involving addition and subtraction of numbers beyond 1,000,000
- Choose between mental, written, and calculator methods for a multi-step problem and justify the choice
- Interpret a real-life context to identify which addition/subtraction operations are needed across multiple steps
“If your child is given a complicated word problem involving large numbers or decimals — like calculating the total cost of several items — can they plan and carry out all the steps correctly?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Addition & Subtraction
- Age range
- Ages 10–11