Adding and Subtracting three to four decimals numbers
Of up to three decimals places.
10 - 4.32 + 2.137 =
10. _ _ _ - 4. 32 _ + 2.137 =
10. 000 - 4.320 + 2.137 =
TIPS
TO ADD DECIMALS
Ø Rewrite the numbers vertically, lining up the decimal points.
Ø Add, and
Ø Insert a decimals point in the answer below the other decimal points.
TO SUBTRACT DECIMALS
Ø Rewrite the numbers vertically, lining up the decimal points.
Ø Then, subtract adding extra zeros in the minuend if necessary for borrowing.
Ø Insert a decimal point in the answer, below the other decimal points.
TYPES OF QUESTIONS
Ø Value of tenths, hundredths and thousandths,
Ø Decimals in four basic operations and in units ( mm, km, m, kg, g , ml ),
Ø Convert of fraction and percentage to decimals,
Ø Arrangement of points of decimals.
