
Penilaian Harian Bilangan Bulat
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Novianti Bapang
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui suhu di dalam sebuah ruangan laboratorium 23 0C. karena akan digunakan untuk sebuah penelitian, maka suhu ruangan tersebut diturunkan 31 0C lebih rendah dari suhu semula. Berapakah suhu di ruangan itu sekarang?
a. 9 0c
b. 8 0c
c. -8 0c
d. -9 0c
Answer explanation
diketahui: suhu sebelumnya (ss) = 23 0c
penurunan suhu (ps) = 31 0c
ditanya : suhu sekarang (sk) =....?
Dijawab: sk = ss - ps
sk = 23-31
sk = -8 0c
jadi suhu sekarang adalah -8 0c
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(-27)+(-14)+75=….
a. 34
b. 33
c. -32
d. -33
Answer explanation
(-27)+(-14)+75=...
ini berarti bahwa
(-27)+(-14)+75 sama saja dengan
(-27 -14) + 75 = -41 + 75
= 34
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-14 + 46 + (-18) =
a. -78
b. -14
c. 78
d. 14
Answer explanation
-14 + 46 + (-18) =...
ini sama saja bahwa
-14 + 46 + (-18) =
sehingga
(-14 + 46) -18= 32 -18
= 14
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
8 x (-9)+(-45): 5=
a. 81
b. 23
c. -23
d. -81
Answer explanation
8 x (-9)+(-45) : 5=
untuk soal ini yang diselesaikan terlebih dahulu adalah perkalian dan pembagian, maka
(8 x (-9)) + ((-45): 5) = -72 + (-9)
= -81
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
–p+6=4
p=….
a. - 2
b. 2
c. 4
d. -4
Answer explanation
–p+6= 4
-p = 4-6
-p = -2 kedua ruas dikali (-1), maka
p = 2
jadi nilai p adalah 2, sehingga
pembuktian
-p+6=4
-2 +6 =4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hasil perhitungan dari 9 - 12 : 3 - 2 = …
a. 1
b. 2
c. 3
d. 4
Answer explanation
Hasil perhitungan dari 9- 12 : 3 - 2 = …
9- (12 : 3) -2 = 9 - 4 - 2
= 3
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dalam kompetisi matematika, setiap jawaban yang benar diberi nilai 5, salah -3 dan tidak dijawab -1. Dari 50 soal yang diberikan, Andi berhasil menjawab benar 43 dan salah 4. Skor yang diperoleh Rini adalah
a. 200
b. 250
c. 100
d. 150
Answer explanation
diketahu : banyak soal = 50
jawab benar = 43
jawab salah = 4
tidak jawab = 3
jika 1 benar dikali 5
jika 1 salah dikurangi 3
jika tidak jawab dikurangi 1
ditanya: nilai yang diperoleh =...?
Dijawab: nilai benar = 43 x 5 = 215
nilai salah = 4 x (-3) = -12
nilai tdk Jawab = 3 x (-1) = -3
sehingga ketika dioperasikan maka hasilnya adalah
215-12-3 =203 - 3 = 200
jadi, nilai yang diperoleh adalah 200
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