Addition & subtraction

Odd & even numbers

Name: ______________________________Date: ______________Score: ______ / 20

1.
When you add two odd numbers, the answer is always...?
1. Aodd
2. Beven
3. Csometimes odd, sometimes even
2.
When you add two even numbers, the answer is always...?
1. Aeven
2. Bodd
3. Czero
3.
When you add an even number and an odd number, the answer is always...?
1. Aeven
2. Bodd
3. Calways 10
4.
When you add three odd numbers, the answer is always...?
1. Aodd
2. Beven
3. Csometimes each
5.
When you add three even numbers, the answer is always...?
1. Aodd
2. Beven
3. Csometimes odd
6.
The difference between two even numbers is always...?
1. Aodd
2. Beven
3. Calways zero
7.
The difference between two odd numbers is always...?
1. Aodd
2. Beven
3. Calways 1
8.
A statement like 'odd + odd = even' that works for all odd and even numbers is called a...?
1. Acounter-example
2. Bgeneralisation
3. Cestimate
9.
An example that shows a statement is wrong is called a...?
1. Ageneralisation
2. Bcounter-example
3. Ctotal
10.
Work out 7 + 7.
11.
Work out 5 + 5.
12.
Work out 11 + 23 + 35.
13.
Work out 1 + 3 + 5.
14.
Work out 6 + 4.
15.
Work out the difference: 8 - 4.
16.
Work out the difference between the odd numbers 9 and 5.
17.
Add 5 to 8.
18.
Add 5 to 7.
19.
Add 4 to 7.
20.
odd + odd = even.
True False

Answer key

Addition & subtraction — Odd & even numbers