Odpowiedź:
Załącznik 1
1)
2,75 + 3 1/2 = 2 75/100 + 3 1/2 = 2 3/4 + 3 1/2 = 2 3/4 + 3 2/4 = 5 5/4 =
= 6 1/4
2)
4 1/5 - 2,15 = 4 2/10 - 2,15 = 4,2 - 2,15 = 2,05
3)
2 1/2 * 1,2 = 5/2 * 12/10 = 5/2 * 6/5 = 1 * 3 = 3
Załącznik 2
4)
2,4 : 1 5/7 = 24/10 : 12/7 = 12/5 * 7/12 = 1/5 * 7 = 7/5 = 1 2/5
5)
12 1/2 : 1/5 = 25/2 * 5 = 125/2 = 62 1/2
6)
0,2 + 1/2 = 2/10 + 1/2 = 2/10 + 5/10 = 7/10
7)
2,5 * 2 1/2 = 25/10 * 5/2 = 5/2 * 5/2 = 25/4 = 6 1/4
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Odpowiedź:
Załącznik 1
1)
2,75 + 3 1/2 = 2 75/100 + 3 1/2 = 2 3/4 + 3 1/2 = 2 3/4 + 3 2/4 = 5 5/4 =
= 6 1/4
2)
4 1/5 - 2,15 = 4 2/10 - 2,15 = 4,2 - 2,15 = 2,05
3)
2 1/2 * 1,2 = 5/2 * 12/10 = 5/2 * 6/5 = 1 * 3 = 3
Załącznik 2
4)
2,4 : 1 5/7 = 24/10 : 12/7 = 12/5 * 7/12 = 1/5 * 7 = 7/5 = 1 2/5
5)
12 1/2 : 1/5 = 25/2 * 5 = 125/2 = 62 1/2
6)
0,2 + 1/2 = 2/10 + 1/2 = 2/10 + 5/10 = 7/10
7)
2,5 * 2 1/2 = 25/10 * 5/2 = 5/2 * 5/2 = 25/4 = 6 1/4