# Hotmath

Title:
Hotmath
Author:
Hotmath
Chapter: Operations, Expressions and Variables Section: Operations, Expressions and Variables

Problem: 1

Explain which operation would you perform first.

24 · 56 – 30

Problem: 3

Simplify the expression without using a calculator.

3 + 10 5

Problem: 5

Simplify.

75 3 + 5

Problem: 7

Simplify.

36 6 9

Problem: 9

Evaluate the given expression.

12 6 4

Problem: 11

Evaluate the given expression.

14 7 + 30 6

Problem: 13

Evaluate the expression.

18 – 2 9

Problem: 15

Evaluate the expression.

6 2 – 8 2

Problem: 17

Simplify the expression without using a calculator.

(13 + 5) 9 5

Problem: 19

Simplify the expression without using a calculator.

8 – 7(4) + 14

Problem: 21

Simplify the expression without using a calculator.

3[16 – (3 + 7) 5]

Problem: 23

Simplify.

(59 – 7) 13

Problem: 25

Simplify.

(73 + 2) 3 5

Problem: 27

Simplify.

Problem: 29

Use , or = to compare the statement and complete it.

Problem: 31

Use , or = to compare the statement and complete it.

Problem: 33

Decide whether the number sentence is true or false. If it is false, copy it and insert parentheses to make it true.

6 + 21 3 = 9

Problem: 35

Decide whether the number sentence is true or false. If it is false, copy it and insert parentheses to make it true.

7 + 7 · 2 + 6 = 63

Problem: 37

Copy the given sentence. Use a calculator and find where to insert parentheses so that the sentence is true. Use the parentheses key, if needed.

80 – 15 + 5 = 60

Problem: 39

Copy the given sentence. Use a calculator and find where to insert parentheses so that the sentence is true. Use the parentheses key, if needed.

12 1 + 3 + 10 = 13