Numerical Expressions Involving Whole Numbers
We will learn how to simplify the numerical expressions involving whole numbers. We know how to perform the fundamental operations, namely addition, subtraction, multiplication and division involving whole numbers and now we will learn to perform two or more operations together.
Solved examples to simplify the numerical expressions involving whole numbers:
Simplify the following expression:
(i) 20 + 20 ÷ 5 + 7 × 9
= 20 + 4 + 7 × 9 (First step: Divide 20 ÷ 5 = 4)
= 20 + 4 + 63 (Second step: Multiply 7 × 9 = 63)
= 87 (Third step: Add 20 + 4 + 63 = 87)
Therefore, 20 + 20 ÷ 5 + 7 × 9 = 87
(ii) 7 × 5 - 3 + 25 ÷ 5 × 7
= 7 × 5 - 3 + 5 × 7 (First step: Divide 25 ÷ 5 = 5)
= 35 - 3 + 35 (Second step: Multiply 7 × 5 = 35 and 5 × 7 = 35)
= 35 + 35 - 3 (Third step: Rearrange)
= 70 - 3 (Fourth step: Add 35 + 35 = 70)
= 67 (Fifth step: Subtract 70 - 3 = 67)
Therefore, 7 × 5 - 3 + 25 ÷ 5 × 7 = 67
(iii) 15 × 2 + 4 - 22
= 30 + 4 - 22 (First step: Multiply 15 × 2 = 30)
= 34 - 22 (Second step: Add 30 + 4 = 34)
= 12 (Third step: Subtract 34 - 22 = 12)
Therefore, 15 × 2 + 4 - 22 = 12
From Numerical Expressions Involving Whole Numbers to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
Recent Articles
-
2nd Grade Geometry Worksheet | Plane and Solid Shapes | Point | Line
Dec 12, 24 09:20 AM
2nd grade geometry worksheet -
Types of Lines |Straight Lines|Curved Lines|Horizontal Lines| Vertical
Dec 09, 24 10:39 PM
What are the different types of lines? There are two different kinds of lines. (i) Straight line and (ii) Curved line. There are three different types of straight lines. (i) Horizontal lines, (ii) Ver… -
Points and Line Segment | Two Points in a Curved Surface | Curve Line
Dec 09, 24 01:08 AM
We will discuss here about points and line segment. We know when two lines meet we get a point. When two points on a plane surface are joined, a straight line segment is obtained. -
Solid Shapes | Basic Geometric Shapes | Common Solid Figures | Plane
Dec 08, 24 11:19 PM
We will discuss about basic solid shapes. We see a variety of solid objects in our surroundings. Solid objects have one or more shapes like the following. Match the objects with similar shape. -
2nd grade math Worksheets | Free Math Worksheets | By Grade and Topic
Dec 07, 24 03:38 PM
2nd grade math worksheets is carefully planned and thoughtfully presented on mathematics for the students.
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.