1.Oblicz w pamięci :
a) 4 2/7 + 5 5/7 =
3 5/9 + 7 8/9 =
b) 4 3/4 - 1/2 =
6 3/4 + 2 1/2 =
2.Oblicz :
a) 1 1/3 + 3/5 =
b) 2 5/6 + 1 3/8 =
c) 5/9 + 5/6 =
d) 1 7/10 + 2 3/4 =
3. Oblicz :
a) 1 2/3 * 9/10 =
5 3/16 * 8 =
(3/4) do potęgi 3 =
b) 12 * 3 3/4 =
3 1/3 * 2 2/5 =
(1 1/7) do potęgi 2 =
4. Oblicz :
a) 5/6 : 3 =
6 : 1 3/4 =
7 1/5 : 8 =
b) 2/3 : 3/4 =
3 5/7 : 2/3 =
1 1/3 : 2 2/5 =
5. Oblicz wartości ułamków piętrowych:
a) 2/3/4/6 =
b) 3/1/4 =
c) 7/9/3 =
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1.Oblicz w pamięci :
a) 4 2/7 + 5 5/7 = 30/7 + 40/7 = 70/7 = 10
3 5/9 + 7 8/9 = 32/9 + 71/9 = 103/9 = 11 4/9
b) 4 3/4 - 1/2 = 19/4 - 2/4 = 17/4 = 4 1/4
6 3/4 + 2 1/2 = 27/4 + 5/2 = 27/4 + 10/4 = 37/4 = 9 1/4
2.Oblicz :
a) 1 1/3 + 3/5 = 4/3 + 3/5 = 20/15 + 9/15 = 29/15 = 1 14/15
b) 2 5/6 + 1 3/8 = 17/6 + 11/8 = 68/24 + 33/24 = 101/24 = 4 5/24
c) 5/9 + 5/6 = 10/18 + 15/18 = 25/18 = 1 7/18
d) 1 7/10 + 2 3/4 = 17/10 + 11/4 = 34/20 + 55/20 = 89/20 = 4 9/20
3. Oblicz :
a) 1 2/3 * 9/10 = 5/3 * 9/10 = 45/30 = 3/2 = 1 1/2
5 3/16 * 8 = 83/16 * 8/1 = 83/2 = 41 1/2
(3/4) do potęgi 3 = 27/64
b) 12 * 3 3/4 = 12/1 * 15/4 = 45
3 1/3 * 2 2/5 = 10/3 * 12/5 = 8
(1 1/7) do potęgi 2 = (8/7)^2 = 64/49 = 1 15/49
4. Oblicz :
a) 5/6 : 3 = 5/6 : 3/1 = 5/6 * 1/3 = 5/18
6 : 1 3/4 = 6/1 : 7/4 = 6/1 * 4/7 = 24/7 = 3 3/7
7 1/5 : 8 = 36/5 : 8/1 = 36/5 * 1/8 = 9/10
b) 2/3 : 3/4 = 2/3 * 4/3 = 8/9
3 5/7 : 2/3 = 26/7 : 2/3 = 26/7 * 3/2 = 39/7 = 5 4/7
1 1/3 : 2 2/5 = 4/3 : 12/5 = 4/3 * 5/12 = 5/9
5. Oblicz wartości ułamków piętrowych:
a) 2/3/4/6 = 2/3 : 4/6 = 2/3 * 6/4 = 6/6 = 1
b) 3/1/4 = 3/1 : 4/1 = 3/1 * 1/4 = 3/4
c) 7/9/3 = 7/9 : 3/1 = 7/9 * 1/3 = 7/27