MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Elementary School: 3rd, 4th & 5th Grade
Math
Checking Calculations With Inverse Operations
1
2
3
4
5
6
7
8
9
10
Q.1
How would you check 45 - 23 = 22?
0%
By subtracting 22 from 23
0%
By adding 45 and 22
0%
By finding the total of all the numbers
0%
By adding 23 and 22
Q.2
Use number pairs, or bonds, to 20 to find the incorrect calculation:
0%
20 - 10 = 20
0%
20 - 0 = 20
0%
20 - 15 = 5
0%
20 - 19 = 1
Q.3
If 29 - 15 = 14, what could you do to check the answer?
0%
Subtract the numbers in a different order
0%
Add 15 and 14 together
0%
Take out any harder numbers
0%
Put 14 at the beginning of the calculation
Q.4
How do you know that 20 - 10 = 10?
0%
Because I know 10 + 10 = 20
0%
Because it's a subtraction
0%
Because it's an addition
0%
Because I know about subtraction
Q.5
Which calculation could you use to check that 16 - 9 = 7 is correct?
0%
16 + 9 = 7
0%
9 + 7 = 16
0%
7 - 16 = 9
0%
7 - 9 = 16
Q.6
If 3 + 4 + 10 + 3 = 20, what could you do to check the answer?
0%
Take out all the larger numbers
0%
Use multiplication
0%
Add some extra numbers in too
0%
Add the numbers up again in a different order: 10 + 3 + 3 + 4 or 10 + 4 + 3 + 3
Q.7
Use number pairs, or bonds, to 20 to find the incorrect calculation:
0%
20 - 13 = 7
0%
20 - 8 = 12
0%
20 - 16 = 14
0%
20 - 2 = 18
Q.8
How could you check 62 + 38 = 100?
0%
By taking away 100
0%
By finding the difference between 62 and 38
0%
By subtracting 100 from 62
0%
By subtracting 38 from 100
Q.9
Which calculation could you use to check that 15 + 8 = 23 is correct?
0%
23 + 8 = 15
0%
23 + 15 = 8
0%
15 - 8 = 23
0%
23 - 8 = 15
Q.10
What does 'inverse operation' mean?
0%
Doing the calculation upside down
0%
Making a mistake on purpose
0%
The opposite operation
0%
A medical procedure
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page