Subtraction of Decimals
Last updated at June 10, 2025 by Teachoo
Addition and Subtraction of Decimals
Addition of Decimals
You are here
You are here
Class 7 (Ganit Prakash)
Chapter 3 Class 7 - A peek beyond the Point (Ganita Prakash)
- Fractions - Quick Revision
- Need for a smaller unit
- Tenth
- Hundredth
- Figure it out - Page 58
- Decimals
- Fractions to Decimals
- Reading and Writing Decimals
- Unit Conversion - Weight, Length, Money
- Decimal in number line
- Finding greater decimal
- Closest decimal
-
Addition and Subtraction of Decimals
- Decimal Sequences
- Estimating Sums and Differences
- More on Decimal System
- Figure it out - Page 78, 79, 80
Transcript
Subtraction of Decimal Numbers To subtract decimal, first we convert them into fractions and then we convert the final fraction into decimal. Subtract 2.76 from 3.8 2.76 from 3.8 3.8 – 2.76 = 38/10 − 276/100 = 38/10 × 10/10 − 276/100 = 𝟑𝟖𝟎/𝟏𝟎𝟎 − 𝟐𝟕𝟔/𝟏𝟎𝟎 = ((380 − 276))/100 = 104/100 = 1.04 Subtract 9.398 from 34.65 9.398 from 34.65 34.65 – 9.398 = 3465/100 − 9398/1000 = 3465/100 × 10/10 − 9398/1000 = 𝟑𝟒𝟔𝟓𝟎/𝟏𝟎𝟎𝟎 − 𝟗𝟑𝟗𝟖/𝟏𝟎𝟎𝟎 = ((34650 − 9398))/1000 = 25252/1000 = 25.252
