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McGraw-Hill Math Grade 3 Answer Key Chapter 2 Lesson 6 Problem Solving
Solve.
Use objects to help you solve these problems.
Question 1.
There are 6 green frogs, 11 spotted frogs, and 1 brown frog in a pond. How many frogs are there in all? Use ( ) to show two ways to group the addends.
6 + 11 + 1 = 6 + 11 + 1
6 + 11 + 1 = ____
____ + ____ = ____
Answer:
6 + 12 = 18
17 + 1 = 18
Explanation:
There are 6 green frogs, 11 spotted frogs, and 1 brown frog in a pond
The two ways to group the addends is
(6 + 11) + 1
17+ 1 = 18
And
6 + (11 + 1)
6 + 12 = 18
So, There are 18 frogs in all.