Addiere die Bruchzahlen und kürze die Summe die sich ergibt) Das Ergebnis ist wieder ein Bruch.
1) 11 ⁄ 21 + 1 ⁄ 3 = 11 ⁄ 21 + 1 · 7 ⁄ 3 · 7 = 11 ⁄ 21 + 7 ⁄ 21 = 18 ⁄ 21 = 6 ⁄ 7 |
|
2) 5 ⁄ 28 + 1 ⁄ 4 = 5 ⁄ 28 + 1 · 7 ⁄ 4 · 7 = 5 ⁄ 28 + 7 ⁄ 28 = 12 ⁄ 28 = 3 ⁄ 7 |
|
3) 13 ⁄ 24 + 1 ⁄ 12 = 13 ⁄ 24 + 1 · 2 ⁄ 12 · 2 = 13 ⁄ 24 + 2 ⁄ 24 = 15 ⁄ 24 = 5 ⁄ 8 |
|
4) 7 ⁄ 18 + 1 ⁄ 6 = 7 ⁄ 18 + 1 · 3 ⁄ 6 · 3 = 7 ⁄ 18 + 3 ⁄ 18 = 10 ⁄ 18 = 5 ⁄ 9 |
|
5) 19 ⁄ 28 + 1 ⁄ 4 = 19 ⁄ 28 + 1 · 7 ⁄ 4 · 7 = 19 ⁄ 28 + 7 ⁄ 28 = 26 ⁄ 28 = 13 ⁄ 14 |
|
6) 17 ⁄ 28 + 1 ⁄ 4 = 17 ⁄ 28 + 1 · 7 ⁄ 4 · 7 = 17 ⁄ 28 + 7 ⁄ 28 = 24 ⁄ 28 = 6 ⁄ 7 |
|
7) 19 ⁄ 30+ 1 ⁄ 10 = 19 ⁄ 30 + 1· 3 ⁄ 10·3 = 19 ⁄ 30+ 3 ⁄ 30=22 ⁄ 30 = 11 ⁄ 15 |
|
8) 17 ⁄ 30+ 1 ⁄ 10 = 17 ⁄ 30 + 1· 3 ⁄ 10·3 = 17 ⁄ 30+ 3 ⁄ 30=20 ⁄ 30 = 2 ⁄ 3 |
|
9) 7 ⁄ 24 + 1 ⁄ 3 = 7 ⁄ 24 + 1 · 8 ⁄ 3 · 8 = 7 ⁄ 24 + 8 ⁄ 24 = 15 ⁄ 24 = 5 ⁄ 8 |
|
10) 17 ⁄ 24 + 1 ⁄ 8 = 17 ⁄ 24 + 1 · 3 ⁄ 8 · 3 = 17 ⁄ 24 + 3 ⁄ 24 = 20 ⁄ 24 = 5 ⁄ 6 |
|
11) 19 ⁄ 30+ 1 ⁄ 5 = 19 ⁄ 30 + 1· 6 ⁄ 5·6 = 19 ⁄ 30+ 6 ⁄ 30=25 ⁄ 30 = 5 ⁄ 6 |
|
12) 13 ⁄ 24 + 1 ⁄ 3 = 13 ⁄ 24 + 1 · 8 ⁄ 3 · 8 = 13 ⁄ 24 + 8 ⁄ 24 = 21 ⁄ 24 = 7 ⁄ 8 |
|
13) 3 ⁄ 28 + 1 ⁄ 4 = 3 ⁄ 28 + 1 · 7 ⁄ 4 · 7 = 3 ⁄ 28 + 7 ⁄ 28 = 10 ⁄ 28 = 5 ⁄ 14 |
|
14) 11 ⁄ 30+ 1 ⁄ 6 = 11 ⁄ 30 + 1· 5 ⁄ 6·5 = 11 ⁄ 30+ 5 ⁄ 30=16 ⁄ 30 = 8 ⁄ 15 |
|
15) 11 ⁄ 20 + 1 ⁄ 4 = 11 ⁄ 20 + 1 · 5 ⁄ 4 · 5 = 11 ⁄ 20 + 5 ⁄ 20 = 16 ⁄ 20 = 4 ⁄ 5 |
|
16) 19 ⁄ 30+ 1 ⁄ 6 = 19 ⁄ 30 + 1· 5 ⁄ 6·5 = 19 ⁄ 30+ 5 ⁄ 30=24 ⁄ 30 = 4 ⁄ 5 |
|
17) 17 ⁄ 28 + 1 ⁄ 7 = 17 ⁄ 28 + 1 · 4 ⁄ 7 · 4 = 17 ⁄ 28 + 4 ⁄ 28 = 21 ⁄ 28 = 3 ⁄ 4 |
|
18) 7 ⁄ 24 + 1 ⁄ 8 = 7 ⁄ 24 + 1 · 3 ⁄ 8 · 3 = 7 ⁄ 24 + 3 ⁄ 24 = 10 ⁄ 24 = 5 ⁄ 12 |
|
19) 13 ⁄ 18 + 1 ⁄ 6 = 13 ⁄ 18 + 1 · 3 ⁄ 6 · 3 = 13 ⁄ 18 + 3 ⁄ 18 = 16 ⁄ 18 = 8 ⁄ 9 |
|
20) 11 ⁄ 30+ 1 ⁄ 3 = 11 ⁄ 30 + 1· 10 ⁄ 3·10 = 11 ⁄ 30+ 10 ⁄ 30=21 ⁄ 30 = 7 ⁄ 10 |
1) 1 ⁄ 18 + 7 ⁄ 9 = 1 ⁄ 18 + 7 · 2 ⁄ 9 · 2 = 1 ⁄ 18 + 14 ⁄ 18 = 15 ⁄ 18 = 5 ⁄ 6 |
|
2) 1 ⁄ 30+ 5 ⁄ 6 = 1 ⁄ 30 + 5· 5 ⁄ 6·5 = 1 ⁄ 30+ 25 ⁄ 30=26 ⁄ 30 = 13 ⁄ 15 |
|
3) 19 ⁄ 24 + 1 ⁄ 8 = 19 ⁄ 24 + 1 · 3 ⁄ 8 · 3 = 19 ⁄ 24 + 3 ⁄ 24 = 22 ⁄ 24 = 11 ⁄ 12 |
|
4) 19 ⁄ 28 + 1 ⁄ 14 = 19 ⁄ 28 + 1 · 2 ⁄ 14 · 2 = 19 ⁄ 28 + 2 ⁄ 28 = 21 ⁄ 28 = 3 ⁄ 4 |
|
5) 13 ⁄ 24 + 1 ⁄ 8 = 13 ⁄ 24 + 1 · 3 ⁄ 8 · 3 = 13 ⁄ 24 + 3 ⁄ 24 = 16 ⁄ 24 = 2 ⁄ 3 |
|
6) 19 ⁄ 30+ 1 ⁄ 15 = 19 ⁄ 30 + 1· 2 ⁄ 15·2 = 19 ⁄ 30+ 2 ⁄ 30=21 ⁄ 30 = 7 ⁄ 10 |
|
7) 1 ⁄ 24 + 7 ⁄ 8 = 1 ⁄ 24 + 7 · 3 ⁄ 8 · 3 = 1 ⁄ 24 + 21 ⁄ 24 = 22 ⁄ 24 = 11 ⁄ 12 |
|
8) 1 ⁄ 24 + 5 ⁄ 6 = 1 ⁄ 24 + 5 · 4 ⁄ 6 · 4 = 1 ⁄ 24 + 20 ⁄ 24 = 21 ⁄ 24 = 7 ⁄ 8 |
|
9) 1 ⁄ 20 + 7 ⁄ 10 = 1 ⁄ 20 + 7 · 2 ⁄ 10 · 2 = 1 ⁄ 20 + 14 ⁄ 20 = 15 ⁄ 20 = 3 ⁄ 4 |
|
10) 15 ⁄ 28 + 1 ⁄ 4 = 15 ⁄ 28 + 1 · 7 ⁄ 4 · 7 = 15 ⁄ 28 + 7 ⁄ 28 = 22 ⁄ 28 = 11 ⁄ 14 |
|
11) 1 ⁄ 30+ 4 ⁄ 15 = 1 ⁄ 30 + 4· 2 ⁄ 15·2 = 1 ⁄ 30+ 8 ⁄ 30=9 ⁄ 30 = 3 ⁄ 10 |
|
12) 17 ⁄ 30+ 1 ⁄ 6 = 17 ⁄ 30 + 1· 5 ⁄ 6·5 = 17 ⁄ 30+ 5 ⁄ 30=22 ⁄ 30 = 11 ⁄ 15 |
|
13) 11 ⁄ 24 + 1 ⁄ 8 = 11 ⁄ 24 + 1 · 3 ⁄ 8 · 3 = 11 ⁄ 24 + 3 ⁄ 24 = 14 ⁄ 24 = 7 ⁄ 12 |
|
14) 7 ⁄ 30+ 1 ⁄ 15 = 7 ⁄ 30 + 1· 2 ⁄ 15·2 = 7 ⁄ 30+ 2 ⁄ 30=9 ⁄ 30 = 3 ⁄ 10 |
|
15) 17 ⁄ 24 + 1 ⁄ 6 = 17 ⁄ 24 + 1 · 4 ⁄ 6 · 4 = 17 ⁄ 24 + 4 ⁄ 24 = 21 ⁄ 24 = 7 ⁄ 8 |
|
16) 1 ⁄ 24 + 5 ⁄ 8 = 1 ⁄ 24 + 5 · 3 ⁄ 8 · 3 = 1 ⁄ 24 + 15 ⁄ 24 = 16 ⁄ 24 = 2 ⁄ 3 |
|
17) 17 ⁄ 30+ 1 ⁄ 3 = 17 ⁄ 30 + 1· 10 ⁄ 3·10 = 17 ⁄ 30+ 10 ⁄ 30=27 ⁄ 30 = 9 ⁄ 2 |
|
18) 1 ⁄ 24 + 3 ⁄ 8 = 1 ⁄ 24 + 3 · 3 ⁄ 8 · 3 = 1 ⁄ 24 + 9 ⁄ 24 = 10 ⁄ 24 = 5 ⁄ 6 |
|
19) 1 ⁄ 30+ 1 ⁄ 10 = 1 ⁄ 30 + 1· 3 ⁄ 10·3 = 1 ⁄ 30+ 3 ⁄ 30=4 ⁄ 30 = 2 ⁄ 15 |
|
20) 1 ⁄ 30+ 1 ⁄ 15 = 1 ⁄ 30 + 1· 2 ⁄ 15·2 = 1 ⁄ 30+ 2 ⁄ 30=3 ⁄ 30 = 1 ⁄ 10 |
1) 13 ⁄ 30+ 4 ⁄ 15 = 13 ⁄ 30 + 4 · 2 ⁄ 15 · 2 = 13 ⁄ 30+ 8 ⁄ 30=21 ⁄ 30 = 7 ⁄ 15 |
|
2) 5 ⁄ 24 + 3 ⁄ 8 = 5 ⁄ 24 + 3 · 3 ⁄ 8 · 3 = 5 ⁄ 24 + 9 ⁄ 24 = 14 ⁄ 24 = 7 ⁄ 12 |
|
3) 23 ⁄ 30+ 2 ⁄ 15 = 23 ⁄ 30 + 2 · 2 ⁄ 15 · 2 = 23 ⁄ 30+ 4 ⁄ 30=27 ⁄ 30 = 9 ⁄ 10 |
|
4) 5 ⁄ 24 + 5 ⁄ 12 = 5 ⁄ 24 + 5 · 2 ⁄ 12 · 2 = 5 ⁄ 24 + 10 ⁄ 24 = 15 ⁄ 24 = 5 ⁄ 8 |
|
5) 5 ⁄ 28 + 3 ⁄ 4 = 5 ⁄ 28 + 3 · 7 ⁄ 4 · 7 = 5 ⁄ 28 + 21 ⁄ 28 = 26 ⁄ 28 = 13 ⁄ 14 |
|
6) 7 ⁄ 24 + 5 ⁄ 8 = 7 ⁄ 24 + 5 · 3 ⁄ 8 · 3 = 7 ⁄ 24 + 15 ⁄ 24 = 22 ⁄ 24 = 11 ⁄ 12 |
|
7) 13 ⁄ 24 + 3 ⁄ 8 = 13 ⁄ 24 + 3 · 3 ⁄ 8 · 3 = 13 ⁄ 24 + 9 ⁄ 24 = 22 ⁄ 24 = 11 ⁄ 12 |
|
8) 17 ⁄ 30+ 2 ⁄ 15 = 17 ⁄ 30 + 2 · 2 ⁄ 15 · 2 = 17 ⁄ 30+ 4 ⁄ 30=21 ⁄ 30 = 7 ⁄ 10 |
|
9) 13 ⁄ 28 + 2 ⁄ 7 = 13 ⁄ 28 + 2 · 4 ⁄ 7 · 4 = 13 ⁄ 28 + 8 ⁄ 28 = 21 ⁄ 28 = 3 ⁄ 4 |
|
10) 7 ⁄ 30+ 7 ⁄ 15 = 7 ⁄ 30 + 7 · 2 ⁄ 15 · 2 = 7 ⁄ 30+ 14 ⁄ 30=21 ⁄ 30 = 7 ⁄ 10 |
|
11) 17 ⁄ 30+ 4 ⁄ 15 = 17 ⁄ 30 + 4 · 2 ⁄ 15 · 2 = 17 ⁄ 30+ 8 ⁄ 30=25 ⁄ 30 = 5 ⁄ 6 |
|
12) 7 ⁄ 30+ 7 ⁄ 10 = 7 ⁄ 30 + 7 · 3 ⁄ 10 · 3 = 7 ⁄ 30+ 21 ⁄ 30=28 ⁄ 30 = 14 ⁄ 15 |
|
13) 13 ⁄ 30+ 7 ⁄ 15 = 13 ⁄ 30 + 7 · 2 ⁄ 15 · 2 = 13 ⁄ 30+ 14 ⁄ 30=27 ⁄ 30 = 9 ⁄ 10 |
|
14) 11 ⁄ 24 + 5 ⁄ 12 = 11 ⁄ 24 + 5 · 2 ⁄ 12 · 2 = 11 ⁄ 24 + 10 ⁄ 24 = 21 ⁄ 24 = 7 ⁄ 8 |
|
15) 19 ⁄ 30+ 3 ⁄ 10 = 19 ⁄ 30 + 3 · 3 ⁄ 10 · 3 = 19 ⁄ 30+ 9 ⁄ 30=28 ⁄ 30 = 14 ⁄ 15 |
|
16) 15 ⁄ 28 + 3 ⁄ 14 = 15 ⁄ 28 + 3 · 2 ⁄ 14 · 2 = 15 ⁄ 28 + 6 ⁄ 28 = 21 ⁄ 28 = 3 ⁄ 4 | |
17) 5 ⁄ 21 + 3 ⁄ 7 = 5 ⁄ 21 + 3 · 3 ⁄ 7 · 3 = 5 ⁄ 21 + 9 ⁄ 21 = 14 ⁄ 21 = 2 ⁄ 3 |
|
18) 7 ⁄ 20 + 2 ⁄ 5 = 7 ⁄ 20 + 2 · 4 ⁄ 5 · 4 = 7 ⁄ 20 + 8 ⁄ 20 = 15 ⁄ 20 = 3 ⁄ 4 |
|
19) 11 ⁄ 18 + 2 ⁄ 9 = 11 ⁄ 18 + 2 · 2 ⁄ 9 · 2 = 11 ⁄ 18 + 4 ⁄ 18 = 15 ⁄ 18 = 5 ⁄ 6 |
|
20) 3 ⁄ 28 + 9 ⁄ 14 = 3 ⁄ 28 + 9 · 2 ⁄ 14 · 2 = 3 ⁄ 28 + 18 ⁄ 28 = 21 ⁄ 28 = 3 ⁄ 4 |