Use known addition and subtraction facts within 10 to solve problems | Starter Quiz | Oak National Academy

If double 3 is 6, then 4 + 3 is one ____

• more

• less

• half

Answer explanation

3 + 4 is 3 + 3 and one more.

Which double fact would help to solve this problem? 5 + 4 = ?

• 2 + 2

• 4 + 4

• 3 + 3

• 5 + 5

Answer explanation

We can double the smaller addend (4 + 4) and add one to find the sum, or we can double the larger addend (5 + 5) and subtract one to find the sum.

Which sentence describes the representations?

• Double 2 is 4, add 1 is 5

• Double 1 is 2, add 1 is 3

• Double 4 is 8, add 1 is 9

Answer explanation

The red counters represent double 4 is 8 The blue counter represents one more. Double 4 is 8, add 1 is 9

Which sentence describes this representation?

• Double 3 is 6, subtract 1 is 5

• Double 4 is 8, subtract 1 is 7

• Double 2 is 4, subtract 1 is 3

Answer explanation

There are 6 counters in total. Double 3 is 6 One counter has been crossed out. This represents 'subtract 1'. 6 - 1 = 5

Who is describing number 5?

• 
• 
• 

Answer explanation

Double 3 is 6, so one less would be 5

There were 4 sheep and 3 cows in the yard. How many animals were there in total?

• 9

• 8

• 7

Answer explanation

Double 3 is 6, so one more would be 7