Mixed Operations | Maths Grade 2 Learning Concepts Orchids International
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Operations

Mixed operations

We have learned the following operations:

Addition: To find a total or count the objects together we use addition

Subtraction: To find a difference we use subtraction.

Multiplication: To carry out repeated addition of the same number.

    Properties of the Addition, Subtraction, and Multiplication

Let’s see some properties of Addition, Subtraction, and Multiplication related to 0 and 1.

  1. Addition:
    1. When we add 1 to any number, we get the next number as a sum.
    2. When we add 0 to any number, we get the same number as the sum.

    Examples:

    1. 45 + 1 = 46
    2. 87 + 0 = 87
  2. Subtraction:
    1. When we subtract 1 from any number, we get the difference as a number that just comes before that number.
    2. When we subtract 0 from any number, we get the same number as a difference.

    Examples:

    1. 88 – 1 = 87
    2. 99 – 0 = 99
  3. Multiplication:
    1. When we multiply any number by 1, we get the same number as a product.
    2. When we multiply any number by 0, we get the 0 as a product.

    Examples:

    1. 56 × 1 = 56
    2. 34 × 0 = 0

Fact Family: Addition and subtraction facts.

G2_1_Mixed Operation_fact family

There are some examples in which we use more than one operation.

Word problems:

To solve any word problem, follow the steps-

Step 1: Find out which operation we have to do.

Step 2: Identify the numbers with which we have to do that operation.

Step 3: Find out the answer.

Let’s see that examples:

  1. Rohan has 10 pencils. His mother gave him 34 more pencils. Out of total pencils, Rohan gave 12 pencils to Nisha. Now find out how many pencils Rohan has?
  2. Answer:

    Step 1: Find out which operation we have to do.

    Here first we have to do addition and then subtraction.

    Step 2: Identify the numbers with which we have to do that operation.

    G2_2_Mixed Operation_Boy and Girl

    So, let’s do the addition.

    G2_3_Mixed Operation_Addition

    Rohan has 44 pencils; in which he gave 12 pencils to Nisha.

    Step 3: Find out the answer.

    So, let’s do the subtraction.

    G2_4_Mixed Operation_Subtraction

    Now Rohan has left 32 pencils.

    In the above example, we have done addition and subtraction.

  3. Neelu has 4 boxes. In each box, there are 2 balls and 3 dolls. How many toys she has in total?
  4. Answer:

    Step 1: Find out which operation we have to do.

    In each box, there are 2 balls and 3 dolls. So, first we have to do an addition.

    Step 2: Identify the numbers with which we have to do that operation.

    G2_5_Mixed Operation_Multiplication

    Step 3: Find out the answer.

    2 balls + 3 dolls = 5 toys in each box.

    G2_6_Mixed Operation_Multiplication

    There are total of 4 boxes and each box has 5 toys.

    So, let’s do multiplication.

    5 toys × 4 boxes = 20 toys

    So, Neelu has 20 toys in total.

    In the above example, we have done addition and multiplication.

    In this way, by using mixed operations we can solve examples easily.

G2_7_Mixed Operation_Funfact

G2_8_Mixed Operation_Minp Map
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