🧠 Mental Math & Strategies
Master quick mental math strategies for addition and subtraction within 20! This quiz helps you use commutative and associative properties, number lines, and ten frames to solve problems faster. You'll develop automatic recall of number facts and understand how different strategies make math easier. **What you'll learn:** - Use commutative and associative properties for addition and subtraction - Apply ten frames and number lines to solve problems - Develop quick recall of number facts to 20 - Use mental math strategies to solve addition and subtraction problems efficiently
Questions in this quiz
Answers hidden — play to find out.
- Question 1
Which number sentence shows the commutative property of addition? (This means the order of numbers doesn't change the sum.)
- Question 2
Is it true that ?
- Question 3
You want to add . Which grouping makes it easier to solve?
- Question 4
What is using a mental math strategy?
- Question 5
A ten frame always shows exactly 10 empty spaces for counting.
- Question 6
You have 6 counters in a ten frame. How many more do you need to make 10?
- Question 7
Using a number line, what is ?
- Question 8
To solve on a number line, you start at 12 and jump backward 5 steps.
- Question 9
What is using the strategy of counting up?
- Question 10
Which number fact do you know by heart (quick recall)?
- Question 11
The associative property of addition means you can group numbers in different ways and still get the same sum.
- Question 12
You want to find . Which mental math move is best?
- Question 13
What is ?
- Question 14
When using a number line to solve , you jump 3 steps forward from 7.
- Question 15
Which is an example of using doubles to help you add?
- Question 16
Using ten frames, what sum do these show: one frame with 10 counters and another frame with 5 counters?
- Question 17
It is faster to count backward on a number line to solve than to subtract using the "make 10" strategy.