
REVIEW MATEMATIKA / K7 / S1
Authored by Nath Bee
Mathematics
7th Grade
25 Questions

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1.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Suhu di dalam kulkas sebelum dihidupkan 29°C.
Setelah dihidupkan, suhunya turun 3°C setiap 5 menit.
Setelah 15 menit suhu di dalam kulkas adalah ….
Answer explanation
suhu awal = 29°C
setelah dihidupkan 3°C = 5 menit
suhu akhir = 29 - ( 2(3°C) ) = 29 - 6 = 23°C
2.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Ibu memberikan uang pada Ani Rp 50.000,00 dan Ani membelanjakan uang tersebut Rp 6.000,00 tiap hari. Jika sekarang sisa uangnya Rp 2.000,00,
maka Ani telah membelanjakan uangnya selama ….
Answer explanation
Rp.50.000 - Rp.2000 = Rp. 48.000
Rp.48.000 : Rp.6000 = 8
3.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Eri diberi 32 butir kue cubit, 24 kue nastar, dan 8 kue sagu oleh ibunya.
Ia diminta untuk memasukkan kue tersebut ke dalam plastik,
di mana masing-masing plastik terisi jumlah kue yang sama.
Berapa jumlah plastik yang dibutuhkan Eri ?
Answer explanation
32 = 2 pangkat 5
24 = 2pangkat 3 × 3
8 = 2 pangkat 3
FPB = 2 pangkat 3 = 8.
4.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Hari, Joni, dan Rara sedang menempuh kursus di tempat yang sama. Adapun jadwal kursus ketiganya adalah sebagai berikut.
Hari kursus setiap 6 hari sekali.
Joni kursus setiap 8 hari sekali.
Rara kursus setiap 10 hari sekali.
Jika mereka bertiga kursus bersama untuk pertama kalinya di tanggal 18 Juni, kapan ketiganya akan kursus bersama lagi di kedua kalinya ?
Answer explanation
6 = 2 × 3
8 = 2 pangkat 3
10 = 2 × 5
KPK = 2 pangkat 3 × 3 × 5 = 120.
Jika terakhir bertemu tanggal 18 Juni, maka mereka akan bertemu lagi pada tanggal 18 Juni + 120 hari (4 bulan) = 18 Oktober.
5.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Selesaikan !
20 + (9 x 2) - (5 pangkat 2 ) =
6.
FILL IN THE BLANK QUESTION
1 min • 4 pts
(16 - 4) x (5 - 2) =
7.
FILL IN THE BLANK QUESTION
1 min • 4 pts
Hasil dari
- 3/8 : 0,25 + 8 1/3 x 20 % =
Answer explanation
-3/8 : 0,25 = - 3/8 : 25/100
= - 3/8 x 100/25
= - 300 / 200
8 1/3 x 20 % = 25/3 x 20/100
= 500/300
maka : (-300/200) + 500/300 =
- 900/600 + 1000/600
= 100/600
= 1/6
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