This Grade 3 worksheet focuses on the associative property of multiplication, helping Grade 3 students regroup three factors with parentheses. Learners compare (2 x 3) x 4 with 2 x (3 x 4) in sentence checks, fill-ins, and true/false items. The activities reinforce CCSS 3.OA.5 and show Grade 3 students how smart grouping can make mental multiplication quicker and more accurate.
Style:
Properties of Multiplication
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
In Grade 3, (2 x 3) x 4 equals 2 x (3 x 5) by the associative property.
Rewrite: In Grade 3, (2 x 3) x 4 equals 2 x (3 x 4) by the associative property.
2. Fix the sentence:
The Grade 3 associative property lets you change the order of the factors in 4 x 5 x 2.
Rewrite: The Grade 3 associative property lets you change the grouping of the factors in 4 x 5 x 2.
3. Fix the sentence:
In Grade 3, (3 x 2) x 5 gives a different product than 3 x (2 x 5).
Rewrite: In Grade 3, (3 x 2) x 5 gives the same product as 3 x (2 x 5).
Part B: Fill in the Blank
Write the missing word or number on each line.
1. In Grade 3, (2 x 4) x 3 = 2 x (4 x 3).
2. A Grade 3 student finds 5 x 2 x 3 by first computing (5 x 2) = 10 and then multiplying by 3.
3. In Grade 3, 2 x (3 x 4) equals 2 x 12, which equals 24.
4. Grade 3 students see (4 x 2) x 5 = 4 x (2 x 5) by the associative property.
Part C: True or False?
Read each statement. Circle True or False.
1. In Grade 3, (3 x 4) x 2 equals 3 x (4 x 2) because of the associative property.
True False
2. The Grade 3 associative property changes the order of the factors.
True False
3. A Grade 3 student can group 2 x 5 first in 2 x 5 x 7 to make the math easier.
True False
Properties of Multiplication
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
In Grade 3, (2 x 3) x 4 equals 2 x (3 x 5) by the associative property.
Rewrite: In Grade 3, (2 x 3) x 4 equals 2 x (3 x 4) by the associative property.
2) Fix the sentence:
The Grade 3 associative property lets you change the order of the factors in 4 x 5 x 2.
Rewrite: The Grade 3 associative property lets you change the grouping of the factors in 4 x 5 x 2.
3) Fix the sentence:
In Grade 3, (3 x 2) x 5 gives a different product than 3 x (2 x 5).
Rewrite: In Grade 3, (3 x 2) x 5 gives the same product as 3 x (2 x 5).
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) In Grade 3, (2 x 4) x 3 = 2 x (4 x 3).
2) A Grade 3 student finds 5 x 2 x 3 by first computing (5 x 2) = 10 and then multiplying by 3.
3) In Grade 3, 2 x (3 x 4) equals 2 x 12, which equals 24.
4) Grade 3 students see (4 x 2) x 5 = 4 x (2 x 5) by the associative property.
★ Part C: True or False?
Read each statement. Circle True or False.
1) In Grade 3, (3 x 4) x 2 equals 3 x (4 x 2) because of the associative property.
True
False
2) The Grade 3 associative property changes the order of the factors.
True
False
3) A Grade 3 student can group 2 x 5 first in 2 x 5 x 7 to make the math easier.
True
False
Ready to Practice?
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10 Questions
15-20 minutes
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