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Addition of numbers close to multiple of tens i.e. 19,29,39,49,... (Addition tricks)

This is also a very good idea of addition. The following examples of addition will a good effort to make a sharp mind of your kids. At least this is a new idea of addition and helpful to solve questions more fastly.

Let us see the following examples.

  • 117 + 29
  • = 117 + 30 – 1

    = 147 – 1

    = 146

  • 316 + 97
  • = 316 + 100 – 3

    = 416 – 3

    = 413

  • 256 + 96
  • = 256 + 100 – 4

    = 356 – 4

    = 352

  • 99 + 98
  • = 100 – 1 + 100 – 2

    = 200 – 3

    = 197

  • 889 + 999
  • = 889 + 1000 – 1

    = 1889 – 1

    = 1888

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