Steemkids lessons: Addition and subtraction of decimals

in Steem Kids & Parents3 years ago (edited)

Polish_20210808_200202603.png
image edited on polish

A decimal number is a number which uses a decimal point followed by digits that shows values lesser than one.
       A decimal is divided into two parts by the point. The whole number or integer part and the fractional part.

Example:
85.4 is a decimal number.
85 is the whole number or integer while 4 is the fractional part less than one
.

Example 2:
7.7174 is a decimal number. It is pronounced as seven point seven_ one _seven _four.

Tabular illustration

Digitvalue namevalueword form
7units7seven
.decimal point__
7tenths(t)7/10seven tenth
1hundredth1/100one hundredths
7thousandths7/1000seven thousandths
4ten thousandths4/10000four ten thousandths

45.6 is a decimal fraction. You see the illustration in the table below:

Digitvalue nameplace valueword form
4tens40forty
5units5five
.decimal point__
6tenths6/10six tenth

Changing decimals to fractions

The following are the steps to solve problems on changing decimals to fractions:
Step 1: Remove the decimal number and divide by ten, hundredth, thousandth, ten thousandths, etc.
N/b: if there is only one digit after the decimal point we divide by ten. If there are two digits we divide by hundredth and so on. We divide according to the number of the digits.
Examples:

IMG_20210724_223014~2.jpg

Write the following decimals as fractions :
(a)3.20 (b)0.25
(c)7.29 (d)3.7

Solutions

3.20 = 3+0.20
since there are only 2 digits after the decimal point we remove the decimal point and divide by 100

IMG_20210724_223014~5.jpg

Additions and subtractions of decimals

Decimal numbers can be added or subtracted if they are of the same decimal place.

Examples

Simplify the following:
(a)10.63 + 6.32
(b)14.354 + 23.201
(c)11.21 + 50 + 0.7
(d) 74.3 + 2.24

Polish_20210808_125755599~2.jpg

Simplify the following:

  • 56.80 - 12.13
  • 151.556 - 134.325
  • 76 - 33.496

IMG_20210724_223014~7.jpg

IMG_20210724_223014~8.jpg

Assignment

Change the following decimals to fractions:

  • 3.22
  • 15.38
  • 3.633
  • 7.65

Simplify the following:

  • 16.046 + 17.148
  • 76.43 + 14.14+ 96.17
  • 24.76 - 9.14
  • 46.475 - 40.167
Rules of the assignment

Reward pool

5 steem will be shared among all participants of this assignment.

Special mention </ center>

@steemkidss
@ngoenyi

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Felicidades por esta muestra. Es una lección muy útil. Gracias @madilyn02 por compartirla.

Hi @ijelady @jyoti-thelight, @michaelu40, @happy01, @ohia576. I invite you to participate in this assignment.

This is beautiful,i invite,@chimeroselam,@favourbest22 to participate in this assignment

Thank you ma'am @ijelady for your support.

 3 years ago 

Hi @madilyn02, thank you for another lecture.
I believe the kids will love it.

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