1. 7,5-0,25+1.02+0,15= 2. 12,4+2,3-3,5+0,5= 3. 2/5 + 1 2/3=

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1. 7,5-0,25+1.02+0,15=
2. 12,4+2,3-3,5+0,5=
3. 2/5 + 1 2/3=

1. 7,5 – 0,25 + 1,02 + 0,15 = ….

= 7,25 + 1,02 + 0,15

= 7,27 + 0,15

= 7,42

2. 12,4 + 2,3 – 3,5 + 0,5 = ….

= 14,7 – 3,5 + 0,5

= 11,2 + 0,5

= 11,7

3. 2/5 + 1 2/3 = ….

= 2/5 + 5/3

= (2×3)/(5×3) + (5×5)/(3×5)

= 6/15 + 25/15

= 31/15

= 2 1/15

Jawab:

Penjelasan dengan langkah-langkah:

1. 7,5-0,25+1.02+0,15=

  7,75+1.17=  8,92

2. 12,4+2,3-3,5+0,5=

    14,7-4=
10,4

3. 2/5 + 1 2/3=

  1 (2/5 + 2/3)

  1 (5/15+7/15)

  1 (12/15)