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NOME_____________________COGNOME_________________DATA___________CLASSE_______
VERIFICA DI MATEMATICA
1) Una spugna asciutta pesa 220 etti. Se viene bagnata, AUMENTA il proprio peso del 60%. Quanto
peserà da bagnata?
2) Ho ordinato dei tablet per i miei studenti. Quando il corriere me li consegna, mi avvisa che per
un problemi tecnici non hanno potuto portarli tutti e che il 25% dell'ordine iniziale è ancora da
spedire. Se nel pacco ci sono 21 tablet, quanti ne avevamo ordinati in origine? (attenzione! Quanti
sono in percentuale i tablet che sono arrivati se quelli NON arrivati sono il 25% ? )
3) Risolvere le seguenti proporzioni :
2 : 9 = x : 15 5 : 2 = 8 : x 14 : x = 6 : 3
4) Una giacca della scorsa stagione costava 320 euro. Viene venduta oggi con uno sconto del 20%.
Quanto dovrai pagare per comprarla? (suggerimento.... attenzione a non fermarsi al primo
passaggio!! )
5) Se mediamente per servire il gelato a 300 persone vengono usati 45 litri di latte, quanti ne
occorrono per 450 persone?
6) 60 ragazzi, per regalare al loro amato professore un weekend relax alle terme, devono pagare
ognuno 16 euro. All'ultimo momento 20 di loro non vogliono più partecipare alla spesa. Quanto
dovranno pagare a testa i ragazzi che restano? (suggerimento... quanti ragazzi restano? Attenzione
a scegliere i dati!!!)
7) Risolvere le seguenti espressioni mantenendo, quando possibile, la forma esponenziale.
!!! Attenzione all'esponente nella parentesi del denominatore della prima !!!
63
⋅68
:62
(
7
2
+
12
5
+
1
10
)
2
; 7
6
⋅7
2
⋅7
11
: 7
9
; 3
4
−3
6
:3
2
+3
6
−(3
2
)
3
+11
8) Risolvere le seguenti proporzioni :
3 : 5 = x : 15 x : 4 = 5 : 3 10,5 : x = 21 : 5
9) Risolvere le seguenti espressioni :
(Ricordarsi di ricondurre alla stessa base... )
28
⋅45
⋅87
: 24
; 32
⋅94
:33
; 444
⋅163
Mod.1

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Percentuali

  • 1. NOME_____________________COGNOME_________________DATA___________CLASSE_______ VERIFICA DI MATEMATICA 1) Una spugna asciutta pesa 220 etti. Se viene bagnata, AUMENTA il proprio peso del 60%. Quanto peserà da bagnata? 2) Ho ordinato dei tablet per i miei studenti. Quando il corriere me li consegna, mi avvisa che per un problemi tecnici non hanno potuto portarli tutti e che il 25% dell'ordine iniziale è ancora da spedire. Se nel pacco ci sono 21 tablet, quanti ne avevamo ordinati in origine? (attenzione! Quanti sono in percentuale i tablet che sono arrivati se quelli NON arrivati sono il 25% ? ) 3) Risolvere le seguenti proporzioni : 2 : 9 = x : 15 5 : 2 = 8 : x 14 : x = 6 : 3 4) Una giacca della scorsa stagione costava 320 euro. Viene venduta oggi con uno sconto del 20%. Quanto dovrai pagare per comprarla? (suggerimento.... attenzione a non fermarsi al primo passaggio!! ) 5) Se mediamente per servire il gelato a 300 persone vengono usati 45 litri di latte, quanti ne occorrono per 450 persone? 6) 60 ragazzi, per regalare al loro amato professore un weekend relax alle terme, devono pagare ognuno 16 euro. All'ultimo momento 20 di loro non vogliono più partecipare alla spesa. Quanto dovranno pagare a testa i ragazzi che restano? (suggerimento... quanti ragazzi restano? Attenzione a scegliere i dati!!!) 7) Risolvere le seguenti espressioni mantenendo, quando possibile, la forma esponenziale. !!! Attenzione all'esponente nella parentesi del denominatore della prima !!! 63 ⋅68 :62 ( 7 2 + 12 5 + 1 10 ) 2 ; 7 6 ⋅7 2 ⋅7 11 : 7 9 ; 3 4 −3 6 :3 2 +3 6 −(3 2 ) 3 +11 8) Risolvere le seguenti proporzioni : 3 : 5 = x : 15 x : 4 = 5 : 3 10,5 : x = 21 : 5 9) Risolvere le seguenti espressioni : (Ricordarsi di ricondurre alla stessa base... ) 28 ⋅45 ⋅87 : 24 ; 32 ⋅94 :33 ; 444 ⋅163 Mod.1