All the solutions provided in McGraw Hill Math Grade 1 Answer Key PDF Chapter 2 Lesson 4 Addition Facts Through 20 as per the latest syllabus guidelines.
McGraw-Hill Math Grade 1 Answer Key Chapter 2 Lesson 4 Addition Facts Through 20
Add.
Use the number line to find how many in all. Write the sum.
Question 1.
By adding 10 and 5 we get 15.
10 + 5 = 15
Question 2.
Answer:
18 + 1 = 19 stars in all
By adding 18 and 1 we get 19.
Question 3.
6 + 5 = _____
Answer: 11
6 + 5 = 11
By adding 6 and 5 we get 11.
Question 4.
11 + 2 = ___
Answer: 13
By adding 11 and 2 we get 13.
Question 5.
13 + 7 = _____
Answer: 20
By adding 13 and 7 we get 20.
Question 6.
4 + 8 = ____
Answer: 12
By adding 4 and 8 we get 12.