Add Doubles - Complete the Sentence
π―ββοΈ Doubles are like twins! Once you know your doubles facts, you can fill in the missing twin in any math sentence.
Do this: Read the concept below, then try the quiz or activity.
Concept
A double is when you add a number to the exact same number (like 4 + 4).
π― The Missing Twin Puzzle: Sometimes, one of the twins goes missing! Example: 5 + ___ = 10
Because we know the answer is 10, and we see a 5... what is the twin that makes 10? It's 5! So, 5 + 5 = 10.
Example: ___ + 6 = 12 We see a 6... what is 6's twin that makes 12? It's 6! So, 6 + 6 = 12.
Try it
Find the missing twin!
Instructions: Figure out which double fact makes the sentence true.
Problem 1: ___ + 3 = 6 * Answer is 6... the twin is ___! * Math sentence: ___ + 3 = 6
Problem 2: 7 + ___ = 14 * Answer: ___
Problem 3: ___ + 8 = 16 * Answer: ___
Problem 4: 9 + ___ = 18 * Answer: ___