
Exploring 2-Digit Addition with Open Number Lines

Interactive Video
•
Mathematics
•
6th - 10th Grade
•
Hard
+2
Standards-aligned

Mia Campbell
FREE Resource
Standards-aligned
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an open number line?
A number line that can only be used digitally.
A number line with no numbers or markers, added as we work.
A number line with predefined numbers and markers.
A graphical tool only for subtraction.
Tags
CCSS.2.NBT.B.7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the starting number in the example provided?
32
45
10
77
Tags
CCSS.2.NBT.B.5
CCSS.1.NBT.C.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many tens are added first in the example?
Two tens
Three tens
Four tens
Five tens
Tags
CCSS.2.NBT.B.6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does each jump represent when adding tens?
10
15
20
5
Tags
CCSS.2.MD.B.6
CCSS.1.NBT.C.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many ones are added after the tens?
One
Four
Two
Three
Tags
CCSS.2.NBT.B.5
CCSS.1.NBT.C.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final sum of 45 plus 32?
75
80
77
82
Tags
CCSS.2.NBT.B.5
CCSS.1.NBT.C.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What alternative method is shown for adding tens?
Using multiplication
Adding each ten separately
Subtracting then adding back
Adding all tens in one jump
Tags
CCSS.2.MD.B.6
CCSS.1.NBT.C.4
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum after adding 30 all at once to 45?
65
85
75
95
Tags
CCSS.2.NBT.B.5
CCSS.1.NBT.C.4
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might students choose to add all tens at once?
It's a slower process.
It's only for advanced students.
It requires less space on the number line.
It's more challenging.
Tags
CCSS.2.MD.B.6
CCSS.1.NBT.C.4
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