TOPIK #3

Matematik Tahun 6-UPSR

Perpuluhan - Operasi Bergabung Melibatkan Tambah dan Tolak Nombor Perpuluhan.

 

 

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Latihan matematik UPSR ini disarankan untuk digunakan oleh murid-murid tahun 6. Semua latihan adalah menggunakan ayat bahasa Inggeris. Laman ini boleh dicetak terus untuk kegunaan ibubapa/guru sebagai latihtubi.
  1.

0.87 + 4.3 – 1.892 =

    Tips: 5.17 -  1.892 
     
  2. 7.03 – 2.6 +  8.148 =
    Tips: 4.43 + 8.148
     
  3. 9 + 0.4 – 7.067  =
    Tips: 9.4 – 7.067
     
  4. 9.2 – 2 + 5.164  =
    Tips: 7.2 + 5.164
     
  5. 7.06 + 4.5 – 1.093 =
    Tips: 11.56  - 1.093
     
  6. Add 12.86 to ( 30.3 – 9.074)
    Tips: 12.86 + (30.3 – 9.074) atau 30.3 – 9.074
     
  7. 20.05 + 6.7 – 4.037 =
    Tips: 26.75 – 4.037
     
  8. Find the difference between (22 + 6.06) and (9.05 – 0.954)
    Tips: 28.06 – 8.096
     
  9. Round off the value of   31.81 -  9.074 + 7.36 to two decimal places.
    Tips: 22.736 + 7.36
     
  10. Solve ( 44.7 – 10.02 ) +  ( 0.9 – 0.123 )
    Tips: 34.68 + 0.777
     
 

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What is Decimal?

Decimal is a term that describes the base-10 number system, probably the most commonly used number system. The decimal number system consists of ten single- digit numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The number after 9 is 10. The number after 19 is 20 and so forth. Additional powers of 10 require the addition of another positional digit.

In computing, the binary , octal , or hexadecimal number system may be used instead of the decimal system. All these schemes have a number of digits that is a power of 2. This is an advantage in systems that use high and low digital states.

The decimal numeral system (also called base ten or occasionally denary) has ten as its base. It is the numerical base most widely used by modern civilizations.[1][2]

Decimal notation often refers to a base-10 positional notation such as the Hindu-Arabic numeral system; however, it can also be used more generally to refer to non-positional systems such as Roman or Chinese numerals which are also based on powers of ten.

Decimals also refer to decimal fractions, either separately or in contrast to vulgar fractions. In this context, a decimal is a tenth part, and decimals become a series of nested tenths. There was a notation in use like 'tenth-metre', meaning the tenth decimal of the metre, currently an Angstrom. The contrast here is between decimals and vulgar fractions, and decimal divisions and other divisions of measures, like the inch. It is possible to follow a decimal expansion with a vulgar fraction; this is done with the recent divisions of the troy ounce, which has three places of decimals, followed by a trinary place.

Decimal place:

1 - The position of a digit to the right of a decimal point, usually identified by successive ascending ordinal numbers with the digit immediately to the right of the decimal point being first. (The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.)

2 -The position of a digit to the right of the decimal point in a number written in decimal notation. In 0.079, for example, 0 is in the first decimal place, 7 is in the second decimal place, and 9 is in the third decimal place.

Mixed operation with decimals

 

Perform mixed operations of addition and subtraction of decimals up to 3 decimal places

Add and subtract three to four decimal numbers of up to 3 decimal places, involving

a. decimal numbers only

b. whole numbers and decimal numbers.

 

 

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