Mathematics Grade 1 15 min

Subtracting 4

Subtracting 4

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Introduction & Learning Objectives

Learning Objectives Subtract 4 from any number between 4 and 20. Use pictures and drawings to solve 'minus 4' problems. Use a number line to show subtracting 4. Solve simple word problems that involve taking away 4. Write a correct subtraction sentence for subtracting 4. Count backward by 4 from a given number. You have 7 shiny apples 🍎. If you give 4 to your friends, how many are left for you? Today, we will learn a special skill: subtracting the number 4! This helps us find out 'how many are left' in many fun situations. Real-World Applications Sharing 4 of your crayons with a friend. Eating 4 crackers from your snack plate. Seeing 4 ducks swim away in a pond. Putting 4 of your toys back in the box.
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Key Concepts & Vocabulary

TermDefinitionExample SubtractTo take some things away from a group. It means a group gets smaller.If you have 5 balls 🏀🏀🏀🏀🏀 and you subtract 2, you have 3 left. Minus Sign (-)This is the minus sign. It tells us to subtract or take away.The minus sign in `6 - 4` tells us to take 4 away from 6. DifferenceThe difference is the answer you get when you subtract.In `5 - 4 = 1`, the number 1 is the difference. Take AwayThese are other words for subtract. They mean the same thing!'8 take away 4' is the same as '8 subtract 4'. Number LineA line with numbers in order. It helps us count and subtract.You can use a number line to jump backward 4 spots from a number. EquationA math sentence that uses an equals sign (=) to show two things are the same.`9 - 4 = 5` is a subtracti...
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Core Formulas

The Subtraction Sentence Starting Number - 4 = Difference This is how we write a problem for subtracting 4. The big number comes first. The Counting Back Rule Start at the big number, then count back 4 times. Put the starting number in your head. Then use your fingers to count back four numbers. The Picture Rule Draw the starting number of items, then cross out 4. This is a great way to see the subtraction happen. The number not crossed out is the answer.

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Sample Practice Questions

Challenging
Find the next number in the pattern: 19, 15, 11, ___
A.7
B.8
C.10
D.12
Challenging
Leo had 20 cents. He spent 4 cents on a gumball. Then he spent 4 more cents on a sticker. How much money does he have left?
A.16 cents
B.12 cents
C.8 cents
D.28 cents
Challenging
I am a number. If you take 4 away from me, you get 11. What number am I?
A.7
B.14
C.15
D.16

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