Mastering Quick Addition and Subtraction Techniques

What is the result of adding two identical numbers, for example, 2 + 2?

• 8

• 4

• 3

• 2

How would you calculate 3 + 3?

• 6

• 7

• 9

• 5

What is the sum of 2 + 2?

• 2

• 4

• 5

• 3

If you have two numbers and one is just one more than the other, what simple method can you use to find the sum?

• Subtract one and double

• Double the first and add one

• None of the above

• Add one to both numbers

What is the sum of 2 + 3 using the method discussed?

• 3

• 4

• 5

• 6

What is 3 + 4 using the 'doubles plus one' method?

• 6

• 7

• 8

• 5

What strategy is suggested for adding numbers where one is just one more than its double?

• Double the smaller and add two

• Add five

• Double the smaller and add one

• None of these

Using the 'doubles plus one' method, what is 8 + 9?

• 15

• 18

• 17

• 16

What is the result of 8 + 8?

• 16

• 14

• 17

• 15

What should you do after learning the 'doubles plus one' method?

• Practice with a worksheet

• Forget it

• None of these

• Ignore it