

Topic 5 Reteach
Presentation
•
Mathematics
•
4th Grade
•
Medium
Standards-aligned
Vanessa Mireles
Used 4+ times
FREE Resource
5 Slides • 4 Questions
1
Topic 5 Reteach
Arrays & Multiplying 2x2-digit Multiples of 10
Mental Math
Using Rounding to Estimate
Using Compatible Numbers to Estimate
Multi-Step Problems

2
3
Multiple Choice
The array shows 24 rows of 30 squares. Which is a way to find the TOTAL number of squares.
(30 x 20) + (30 x 4)
10 + 10 + 4 + 10 + 10 + 10
(20 x 10) + (4 x 10)
300 + 240
4
5
Multiple Choice
There are 13 girls in Janelle's soccer team. Uniforms cost $32 each. Which equation uses estimation correctly to show ABOUT HOW MUCH money the team spent?
5 x $35 = $175
10 x $30 = $300
20 x $30 = $600
20 x $32 = $640
6
7
Multiple Choice
Mark's football team has scored about 24 points each game. They played 12 games this season. What is the best estimate for the total number of points they scored in the season? Use compatible numbers.
360
250
150
20
8
9
Multiple Choice
In a science contest, 30 students will present their science projects. Each student gets to talk for 20 minutes. How much time is needed to present all of the science projects?
1,800
610
600
50
Topic 5 Reteach
Arrays & Multiplying 2x2-digit Multiples of 10
Mental Math
Using Rounding to Estimate
Using Compatible Numbers to Estimate
Multi-Step Problems

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