Math Drills
Addition and Subtraction (Add → Subtract)
C-3Word Problems
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What this worksheet covers
- Worksheet
- Addition and Subtraction (Add → Subtract)
A single equation shows one addition and one subtraction. The adding always comes first, and the work is done in two goes from the front. Three formats trace that order: bare calculation, Fill in the Blank, and Word Problems, where the equation is made from a scene.
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Moving on without noting the figure reached halfway, children subtract from the starting number instead. Working the sum of the first two out again and taking the last number from it, then setting the two results side by side, finds it. The size of the gap is exactly the second number that was passed over.
Equations with mixed signs run for two lessons from here. Clearing one operation at a time from the left, built up as far as Subtraction, holds good once the signs mix. Addition and Subtraction (Subtract → Add) reverses the order they come in.
- Word Problems6 questions
Questions & answers
Problems and answers on this worksheet
These are the problems in “3-Number Calculations”, shown with their answers.
(1)At Hannah's house there are 19 apples. Grandma gave 9 more. Then 7 were given to the house next door. How many are left now? Answer □
Answer: 21apples
(2)On Riley's desk there are 15 origami sheets. The teacher gave 3 more. Then 4 were given to a younger sister. How many are left now? Answer □
Answer: 14sheets
(3)At the school pencil-case corner there are 24 pencils. 5 more were newly added. Then 6 were given to the 1st graders. How many are there now? Answer □
Answer: 23pencils
(4)In Grandma's garden, 17 apples were harvested. Uncle gave 5 more. Then 6 were given to the neighbors. How many are there now? Answer □
Answer: 16apples
(5)On the library shelf there are 20 books. 1 more was newly added. Then 5 were given to another library. How many are there now? Answer □
Answer: 16books
(6)On Ethan's bookshelf there are 23 books. Auntie gave 3 more. Then 2 were given to a cousin. How many are there now? Answer □
Answer: 24books
What to do next
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