Practice questions available in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 2 Lesson 9 Symbols for Unknown Numbers**Â will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 2 Answer Key Chapter 2 Lesson 9 Symbols for Unknown Numbers

**Solve**

**Solve for the unknown number. Write the answer on the line.**

Question 1.

Â – 40 = 40

Answer:

Question 2.

96 – = 39

Â = ___

Answer:

96 – = 39

= 96 – 39

= 57

Question 3.

Â + 35 = 70

Â = ___

Answer:

Â + 35 = 70

= 70 – 35

= 35

Question 4.

58 + Â = 61

Â = _______

Answer:

58 + Â = 61

= 61 – 58

= 3