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His teacher circled the mistake in his answer. Help him by finding .
Her teacher circled the mistake in her answer. Help her by finding .
Worksheet: Addition within 20
Q1:
Tiffany was asked to solve .
She wrote
Is her solution correct?
- Ayes
- Bno
Q2:
Calculate .
Q4:
James and Hannah are trying to find .
James uses the fact that and says that .
Hannah uses the fact that and says that .
Who is correct?
- AOnly Hannah is correct.
- BThey are both wrong.
- COnly James is correct.
- DThey are both correct.
Q5:
Find the smallest two digit number whose digits add up to 8.
Q6:
Emma tried to solve by using the doubling numbers facts, but she got the answer wrong.
Her teacher circled the mistake in her answer. Help her by finding .
Q7:
Michael was asked to solve .
He wrote
Is his solution correct?
- Ayes
- Bno
Q8:
David tried to solve by using the making ten strategy, but he got the answer wrong.
Q9:
Calculate .
Q10:
Think about adding 8 and 7.
One of the equations is WRONG. Which one is it?
- A
- B
- C
- D
- E
Q11:
Charlotte tried to solve by using the doubling numbers facts, but she got the answer wrong.
Q12:
This is an addition machine. It adds six to any number you put in.
What number will you get if you put 3 in?
What number will you get if you put 12 in?
Q13:
Which of these is NOT equal to 15?
- A
- B
- C
- D
- E
Q14:
Anthony was asked to solve .
He wrote
Is his solution correct?
- Ayes
- Bno