Math Drills
3-Number Calculations Review
E-3Word Problems
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What this worksheet covers
Working three numbers from left to right is consolidated through column form, plain calculation, fill-in-the-blank items and word problems. All-addition and all-subtraction come first, then the mixed forms of add then subtract and subtract then add, before Addition Strategies, Subtraction Strategies and Addition and Subtraction Strategies pull the ideas together.
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For 20 - 8 + 2, adding the last two numbers first to get 20 - 10 and answering 10 stands out. A regrouping trick learned in the strategy work has been carried into an expression that mixes subtraction and addition. Where two amounts are taken away one after the other, children also answer using only one of them.
The count of numbers grows from two to three, and this unit adds strategies for combining them efficiently along with that growth. Working through an expression step by step was already learned by Mixed Addition and Subtraction. That awareness turns into a formal rule in Rules of Calculation in grade 4, once all four operations mix together.
- Addition · Word Problems1 question
- Subtraction · Subtracting in Order (Word Problems)1 question
- Addition and Subtraction (Subtract → Add) · Word Problems1 question
- Order and Strategy · Word Problems3 questions
Questions & answers
Problems and answers on this worksheet
These are the problems in “3-Number Calculations”, shown with their answers.
(1)In the gym there are 14 balls. 1 was used in practice. Then the coach gave 1 more. How many are there now? Answer □
Answer: 14balls
(2)At the store, Grace bought 21 strawberries. She ate 8. Then a friend gave her 9 more. How many are there now? Answer □
Answer: 22strawberries
(3)At the school festival, Sam prepared 22 star decorations. He used 8. Then a friend gave him 8 more. How many are there now? Answer □
Answer: 22star decorations
(4)There are 19 sheets. Yesterday you used 5, and today you used 9 more. How many are left? Answer □
Answer: 5sheets
(5)There are 13 erasers. Mom gave 1 more, and Dad gave 8 more too. How many are there in all? Answer □
Answer: 22erasers
(6)On Ethan's bookshelf there are 27 books. 4 more were bought at the store, and 6 more after that. How many are there in all? Answer □
Answer: 37books
What to do next
More worksheets in this unit
Adding 3 NumbersAdding 3 Numbers Column Calculation (1 Carry)
Adding 3 NumbersAdding 3 Numbers Column Calculation (2 Carries)
Adding 3 NumbersAdding 3 Numbers Calculation
Adding 3 NumbersAdding 3 Numbers Fill in the Blank
Adding 3 NumbersAdding 3 Numbers Word Problems
Subtracting 3 NumbersSubtracting 3 Numbers Calculation
Subtracting 3 NumbersSubtracting 3 Numbers Fill in the Blank
Subtracting 3 NumbersSubtracting 3 Numbers Word Problems
Addition and Subtraction (Add → Subtract)Addition and Subtraction (Add → Subtract) Calculation
Addition and Subtraction (Add → Subtract)Addition and Subtraction (Add → Subtract) Fill in the Blank
Addition and Subtraction (Add → Subtract)Addition and Subtraction (Add → Subtract) Word Problems
Addition and Subtraction (Subtract → Add)Addition and Subtraction (Subtract → Add) Calculation
Addition and Subtraction (Subtract → Add)Addition and Subtraction (Subtract → Add) Fill in the Blank
Addition and Subtraction (Subtract → Add)Addition and Subtraction (Subtract → Add) Word Problems
Order and StrategyOrder and Strategy Calculation (Addition Strategy)
Order and StrategyOrder and Strategy Calculation (Subtraction Strategy)
Order and StrategyOrder and Strategy Calculation (Addition and Subtraction Strategy)
Order and StrategyOrder and Strategy Word Problems
3-Number Calculations Review3-Number Calculations Review Column Calculation (Addition)
3-Number Calculations Review3-Number Calculations Review Calculation
3-Number Calculations Review3-Number Calculations Review Fill in the Blank
3-Number Calculations Review3-Number Calculations Review Calculation (Strategy)
