5. lesson 4 subtraction of whole numbers
Post on 15-Feb-2017
99 Views
Preview:
Transcript
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:
top related