data classe
nome
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EDISCIENZE 5
●◆●◆●◆●■ Comprendere le frazioni proprie, improprie, apparenti
Proprie, improprie o apparenti?
Colloca sulla linea dei numeri le frazioni date, come nell’esempio.
1
Osserva la linea dei numeri e poi classifica le frazioni secondo le indicazioni.
2
Colora di rosa i riquadri con le frazioni proprie, di azzurro quelli con le frazioni apparenti e di giallo quelli con le frazioni improprie.
3
Rappresenta le frazioni date con un disegno.
4
0 1 2 3 4
0 4
3 4
7 8
5 5
6 3
8 5
8 4
24 6
5 3
7 9
6 100
10 100
100 10 1
4 2
4 3
4
4 4
5 4
5 4 6
4
7 4
8 4
9 4 10
4 11
4 12
4
13 4 14
4
15 4
16 4
• frazioni proprie
• frazioni apparenti
• frazioni improprie
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
3 8
5 8
8 8
9 8
12 8
4 12
7 12
12 12
14 12
24
12
data classe
nome
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EL
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EDI ■ Comprendere la frazione complementareFrazioni complementari
Osserva la par te colorata e la par te bianca dell’intero. Scrivi sotto a ognuna di esse le relative frazioni e rispondi.
1
Completa la tabella.
2
Risolvi.
3
• Quale parte devi colorare per completare la striscia?
• Quale parte devi colorare per completare la striscia?
• Quale parte devi colorare per completare la striscia?
• Ho versato di tè alla pesca nei bicchieri.
Quale frazione di tè alla pesca è rimasta nella bottiglia?
• Ho percorso della strada che conduce a casa della nonna.
Quale frazione di strada devo ancora percorrere?
2 3 3 4
5 7
3 8
7 13
21 41
37 50
4 4
19 32
0 5
12 25 2
7 frazione
frazione complementare
4
7 + 7 = = 1
+ = = 1
+ = = 1
data classe
nome
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EDI■ Confrontare le frazioni
Frazioni a confronto
Osserva le frazioni sulla linea dei numeri e confrontale mettendo il segno >, <, =.
1
Trasforma le frazioni come nell’esempio e poi confronta le frazioni equivalenti.
2
Completa e confronta le frazioni con la moltiplicazione in croce, come nell’esem- pio.
3
0 1
2 3
5 6 2
18
2 8
1 2
5 9
0 1
2 3
5 6 2
18
2 8
1 2
5 9 4
36
18 36
40 72 2
8
5 9
5 6
2 3
2 18
1 2
4 36
18 36 2
18
4 36 2 2 x
x = 1
2
18 36 18 18 x
x =
2 8
5 9 2
8 5 9
2 8
18 40 9 5 x x = 2
8 9 x
x = 5
9 8 x
x =
2 3
4 36 x
x = 5
6 x
x =
18 40 ➞
5 6
2 3 5
6 2 3
5 6
3 2 x
x = ➞
2 18
1 2 2
18 1 2
x
x = ➞
data classe
nome
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EDI■ Comprendere e applicare la frazione come percentuale
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Frazione e percentuale
Osserva e completa, come nell’esempio, poi completa le frasi.
1
• La percentuale è una frazione con denominatore Ho colorato
il 25%
=
25% è 1 4 1 4 25
100
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
Ho colorato il
=
è
CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC CCCCCCCCCC AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA AAAAAAAAAA
