Subtraction ESA

Subtraction Word Problems

By Teacher ADC

Example #1

There are 19 ducks in a pond. 8 swam away. How many ducks are still in the pond?

E = equation
S = solution
A = answer

We use ESA in solving word problems.

Steps in Solving

There are 19 ducks in a pond. 8 swam away. How many ducks are still in the pond?

Since the problem is asking for how many ducks are left in the pond, then we will use the operation SUBTRACTION.

ESA

E = Equation, write the equation needed for solving, this uses the numbers given in the problem

E = 19 - 8 = n

ESA

S = this is the solution or the step where you need to solve
If the given has 2-digits, then you can solve it vertically

E = 19 - 8 = n

19

-

8

11

ESA

E = 19 - 8 = n

19

-

8

11

S =

A = answer, it should be in sentence form

A = There are 11 ducks left in the pond.

Example #2

Mother baked 25 cookies. She gave 12 cookies to Sam and the rest to Ana. How many cookies did Ana receive?

ESA - Mother baked 25 cookies. She gave 12 cookies to Sam and the rest to Ana. How many cookies did Ana receive?

E = 25 - 12 = n

25

12

13

S =

A = Ana received 13 cookies.

Multiple Choice

In which part of the ESA should we write a sentence?

• Equation

• Solution

• Answer

Multiple Choice

What does the letter S stands for in ESA?

• Solve

• Solution

• Simple

Multiple Choice

What should be the EQUATION for the word problem:

Abby has ₱45 and she bought a sandwich worth ₱25. How much money is left with Abby?

• 25 - 45 = n

• 45 - 25 = n

• n = 25 - 45

Multiple Choice

What should be the SOLUTION for the word problem:

Abby has ₱45 and she bought a sandwich worth ₱25. How much money is left with Abby?

• 25

  -45

  20

• 45 - 25 = n

• 45

  -25

  20

Multiple Choice

What should be the ANSWER for the word problem:

Abby has ₱45 and she bought a sandwich worth ₱25. How much money is left with Abby?

• Abby has ₱45 left.

• ₱20

• Abby has ₱20 left.