Adding Subtracting Mentally
Authored by Anthony Clark
Mathematics
4th Grade
CCSS covered
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many more red and green marbles are in the collection than blue and yellow marbles?
80
100
74
200
Tags
CCSS.3.OA.D.8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use mental math to compute your answer:
120- 33
87
93
97
83
Tags
CCSS.7.NS.A.1C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use mental math to compute your answer:
103- 79
25
24
178
182
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Garry's Work
422- 145- 45
422- (145- 45)
422- 100
322
Do you agree with Garry's work? Explain.
Yes, his work does seem to follow along with the correct order, and the answer is 322.
No, he needs to use a different strategy. He should have 422-145= 277, and then 277- 45 to get the answer 232.
No, he should have rounded 422 to 400, rounded 145 to 150, and rounded 45 to 50 to find the answer of 200
Tags
CCSS.7.EE.B.3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2 3/5 - 3/4 + 2/5
1 1/4
4 1/4
3 1/4
2 1/4
Tags
CCSS.7.NS.A.1C
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1 3/4 + 1/2 + 1/4+ 1/2
2
3
4
1
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5/6 + 1/3 - 4/3 + 1/6
1
2
3
0
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
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