Breaking Apart Arrays to Multiply
Authored by Ellen Egley
Mathematics
4th - 5th Grade
CCSS covered
Used 19+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which is a correct way to solve 15 × 9?
(10 × 9) + (5 × 9)
(1 × 9) + (5 × 9)
(15 + 3) × (15 + 3)
Tags
CCSS.3.OA.B.5
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which expression is modeled by this array?
(Click on the picture to make it bigger!)
12 × 6
12 + 6
12 × 12
6 × 6
Tags
CCSS.3.OA.C.7
CCSS.3.OA.A.3
CCSS.3.OA.A.1
CCSS.3.MD.C.7
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which is a correct way to break this array apart to make it easier to multiply?
(12 + 6) × (12 + 6)
(10 × 6) + (2 × 6)
(10 × 6) + (10 × 6)
Tags
CCSS.3.OA.B.5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which expression is modeled by this array?
(Click on the picture to make it bigger)
14 × 4
14 + 4
14 + 14
4 + 4
Tags
CCSS.3.OA.B.5
CCSS.3.OA.C.7
CCSS.3.OA.A.3
CCSS.3.OA.A.1
CCSS.3.OA.A.4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which is a correct way to break this array apart to make it easier to multiply?
(14 + 4) × (14 + 4)
(10 × 4) + (4 × 4)
(10 × 4) + (10 × 4)
Tags
CCSS.3.OA.B.5
CCSS.3.OA.A.3
6.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
What is 17 × 5?
Think (10 × 5) + (7 × 5)
(a)
Tags
CCSS.3.OA.B.5
CCSS.3.OA.C.7
7.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
What is 18 × 3?
Think (10 × 3) + (8 × 3)
(a)
Tags
CCSS.3.OA.B.5
CCSS.3.OA.C.7
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