Here is the completed
Chapter 2 Math Vocabulary Quiz with correct answers matched to each definition, followed by a clear explanation.
---
✔ Completed Answers:
1.
Estimate — A number that is close to an exact number.
2.
Addend — The numbers added in an equation.
3.
Equation — A statement that the values of two expressions are equal.
4.
Commutative Property of Addition — Changing the order of addends does not change the sum.
5.
Minuend — The “total” or top number. *(in subtraction: Minuend – Subtrahend = Difference)*
6.
Difference — The result of a subtraction problem.
7.
Reasonableness — A way to check if your answer is possible by rounding or estimating the result.
8.
Sum — The result of adding numbers in an equation.
9.
Subtrahend — The number to subtract.
---
📌
Explanation for Each Match:
1.
Estimate — When you don’t need the exact value, you use an *estimate* — a close approximation. For example, estimating 48 + 52 as about 100.
2.
Addend — In an addition problem like 3 + 5 = 8, both 3 and 5 are *addends*. They are the numbers being added together.
3.
Equation — An *equation* shows that two expressions are equal, using the equals sign (=). Example: 7 + 2 = 9.
4.
Commutative Property of Addition — This property says that no matter what order you add numbers, the sum stays the same. Example: 4 + 6 = 6 + 4.
5.
Minuend — In subtraction (e.g., 10 – 3 = 7), the *minuend* is the starting number — the one you subtract from (here, 10).
6.
Difference — The *difference* is the result of subtraction. In 10 – 3 = 7, 7 is the difference.
7.
Reasonableness — After solving a problem, you check if your answer makes sense. For example, if you estimate 500 + 300 ≈ 800, and your actual answer is 802, it’s reasonable.
8.
Sum — The *sum* is the total you get after adding numbers. In 2 + 3 + 4 = 9, 9 is the sum.
9.
Subtrahend — In subtraction, the *subtrahend* is the number being taken away. In 10 – 3 = 7, 3 is the subtrahend.
---
✔ Final Answer Key:
1. Estimate
2. Addend
3. Equation
4. Commutative Property of Addition
5. Minuend
6. Difference
7. Reasonableness
8. Sum
9. Subtrahend
Let me know if you’d like a printable version or flashcards for studying! 📚
Parent Tip: Review the logic above to help your child master the concept of addition subtraction vocabulary worksheet.
