Question

1.Oblicz w pamięci: 1 1/2+1/4=...., 3 3/4-1/2=...., 10 3/4-2 1/2=...., 5 1/4+3 1/2=.... .

2.Oblicz:

przykład:

2/5+3/10=4/10+3/10=....

2/3+1/6=....

2/3+2/9=....

1 1/5+2 7/10=....

2/5-1/10=....

5/3-5/6=....

1 1/2-3/4=....

3 1/3-1 1/6=....

prosiłabym o zrobienie tych przykładów na 100% dobrze, bo potem jak będę miała źle, to cała klasa mnie wyśmieje.... z góry dzięki!!! DAM NAJ!

Answer 1

1.

1 1/2 + 1/4 = 1 2/4 + 1/4 = 1 3/4

3 3/4 - 1/2 = 3 3/4 - 2/4 = 3 1/4

10 3/4 - 2 1/2 = 10 3/4 - 2 2/4 = 8 1/4

5 1/4 + 3 1/2 = 5 1/4 + 3 2/4 = 8 3/4

2.

2/5 + 3/10 = 4/ 10 + 3/10 = 7/10

2/3 + 1/6 = 4/6 + 1/6 = 5/6

2/3 + 2/9 = 6/9 + 2/9 = 8/9

1 1/5 + 2 7/10 = 1 2/10 + 2 7/10 = 3 9/10

2/5 - 2/10 = 4/10 - 2/10 = 2/10

5/3 - 5/6 = 10/6 - 5/6 = 5/6

1 1/2 - 3/4 = 1 2/4 - 3/4 = 12/4 - 3/4 = 9/4

3 1/3 - 1 1/6 = 3 2/6 - 1 1/6 = 2 1/6

Answer 2

1)

1½ + ¼  =1²/₄ + ¼  =1¾

3¾ - ½ = 3¾ -²/₄  = 3¼ 

10¾ -2½ = 10¾ - 2²/₄ = 8¼ 

5¼ +3½ = 5¼ + 3 ²/₄ = 8 ¾ 

2)

²/₅ + ³/₁₀ =⁴/₁₀ + ³/₁₀ = ⁷/₁₀ 

²/₃ +¹/₆ =⁴/₆ + ¹/₆ = ⁵/₆ 

⅔ + ²/₉ = ⁶/₉ + ²/₉ = ⁸/₉ 

1¹/₅ + 2⁷/₁₀ = 1²/₁₀ +2⁷/₁₀ =3⁹/₁₀

²/₅ - ¹/₁₀ = ⁴/₁₀ - ¹/₁₀ = ³/₁₀ 

⁵/₃ - ⁵/₆ = ¹⁰/₆ - ⁵/₆ = ⁵/₆

 

1½ - ¾ = ³/₂ -¾ = ⁶/₄ - ¾ = ¾

3⅓ -1¹/₆ = 3²/₆ - 1¹/₆ =2¹/₆