Algebraic Expressions and Number Sentences

Contributed by:

Diego Mon, Jan 24, 2022 06:59 AM UTC

Learn about expressions and number sentences in algebra. Also, practice solving a few questions on the topic as well.

1. LESSON 4.6
Algebra: Expressions and Number Sentences
Number sentences contain Examples:
numbers, operations, and 4 !5 " 9 9#4"5
an equal sign.
Some number sentences Examples:
are true. 3 ! 5 " 8 True 9 # 7 " 2 True
Some number sentences Examples:
are false. 3 ! 2 " 9 False 7 # 5 " 6 False
An expression is part of Examples
a number sentence. It 3!2 3!5 9#7
contains numbers and 7#5 9#4 4!5
operations. It does not
contain an equal sign.
Write an expression for each. Then write a number sentence and solve.
1. Ron has 13 yellow apples 2. Marsha bought 24 eggs. She
and 25 red apples. How used 8 for breakfast. How
many apples does he have many eggs does she
altogether? have now?
3. Kyle has 15 more pages to 4. Jill bought 2 oranges,
read than Linda. Linda has 3 apples, and 9 bananas.
12 pages to read. How many How many more bananas
pages does Kyle have than oranges did she buy?
to read?
© Harcourt
Write ! or # to complete the number sentence.
5. 8 ! 4 " 12 6. 7 " 16 # 9 7. 12 # 3 " 9
8. 18 # 6 " 7 ! 5 9. 19 ! 3 " 22 10. 16 ! 11 " 27
11. 12 # 7 " 3 ! 2 12. 2 ! 9 " 17 # 6 13. 8 ! 8 " 16
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