
Sistemas de Numeração
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Professional Development
2nd Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcule x + y + z, quando: X = 29; y = 8; z = 1007
1030
1044
1000
1050
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Efetue quando possível: 4 – 7
-1
0
-3
2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numa subtração, o subtraendo é 83 e a diferença é 149. Qual é o minuendo?
200
220
232
250
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é o conjunto dos números naturais não nulos?
N* = {0, 1, 2, 3, 4, 5, ...}
N* = {1, 2, 3, 4, 5, 6, 7, ...}
N* = {-1, 0, 1, 2, 3, ...}
N* = {1, 2, 3, 4, 5, 6, 7, 8, ...}
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como os pastores contavam suas ovelhas antigamente?
Contavam em voz alta cada ovelha que viam.
Separavam uma pedrinha para cada ovelha e retiravam uma pedrinha ao encontrar cada ovelha.
Usavam um caderno para anotar quantas ovelhas tinham.
Contavam as ovelhas apenas ao final do dia.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcule o valor das expressões: (12 + 9) + 15
30
33
36
39
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como se chama um conjunto com dez elementos no sistema decimal?
Dezena
Centena
Unidade
Milhar
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