Lesson Worksheet: Doubles Minus One Mathematics • 1st Grade
In this worksheet, we will practice adding two consecutive numbers with sums up to 20 by finding one less than a doubles fact.
Q3:
Amelia 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 .
Q5:
Given that , find .
Q6:
Complete the addition sentence.
Q7:
We can use doubles facts to help us add.
What is the double of 2?
Use the doubles fact to find .
Q8:
True or False: is 1 less than the double of 2.
- ATrue
- BFalse
Q9:
Daniel and Madison were asked to find using doubles fact. Who got the right answer?
- ADaniel
- BMadison
Q10:
Pick the correct answer to complete the following.
- A
- B
- C
Q11:
Chloe and Liam solved as shown.
Who is right?
- ALiam
- BChloe