5. lesson 4 subtraction of whole numbers

BY JOHN ROME R. ARANAS

SUBTRACTION OF WHOLE NUMBERS

What is Subtraction?

Subtraction simply means taking one number away

from another.

Parts of Subtraction Equation¿5,890

¿−1,9523,938

Difference – the an-swer in subtraction equation

Minus – subtrac-tion symbol

Minuend – the number to be sub-tracted from

Subtrahend – the number that is to be sub-tracted

How to Solve?• 937 – 161= N

¿ 937¿−161776

3) Repeat the process to the last digits to be subtracted.

13STEPS1) Start subtracting from the ONES digits2) If number in the MINUEND is LOWER than the SUBTRA-HEND, “borrow 1” from the next number at the left.

8

Try These!

7,294−4,903=𝑁

700,284−65,820=𝑁

933,592,049−27,492,004=𝑁

Word ProblemsFor subtraction:Difference RemainsFewer SubtractHow many more ChangeHow much more Decreased byLeft SavedLess/ less than Total cost/ TotalMinus Take away

ExampleAshlee regularly attends to her 120-minute daily dance rehearsals. If 35 minutes was allotted for warm-up and for fixing self, how much time left for the actual practice?

ESA Method

E: 120−35=𝑁S: 120−3585

1010

A: 85 minutes

11

ExampleThe original price of the dress was 4,827 pesos. However, Chezberg was able to buy it at a discounted price of 2,999 pesos. How much she was able to save?

ESA Method

E: 4,827−2,999=𝑁S: 4,827

−2,9991,828

1717

A: 1,828 pesos

11173

Try this!Luigi brought with him 3,482 packs of biscuits. Throughout the day, he was able to give away 2,837 packs to the indigent people. How many packs of biscuits left?

ESA Method

E: S:

A: