
ujian sumatif 1
Authored by Desita Asra
Mathematics
9th - 12th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rani hendak membeli beberapa jenis buah-buahan yaitu, 5 kg buah apel, 2 kg buah jeruk dan 3 kg buah anggur dengan uang sebesar Rp 125.000,00. Ubahlah kalimat tersebut dalam bentuk persamaan matematis
A. 5𝑥 + 2𝑦 + 3𝑧 = 125000
B. 125000 + 5𝑥 + 2𝑦 + 3𝑧 = 0
C. 5𝑥 + 2𝑦 = 125000 + 3𝑧
D. 5𝑥 = 125000 + 2𝑦 + 3𝑧
E. 5𝑥 + 3𝑧 = 125000 + 2𝑦
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2. Yang merupakan bentuk persamaan linear tiga variabel adalah… .
A. 2𝑦 + 𝑦 + 8 = 16
B. 3𝑥 + 2𝑦 = – 𝑧
C. 𝑥 + 𝑦 + 5𝑦 = 20
D. – 4𝑧 + 𝑧 – 6 = 0
E. 𝑥 + 7𝑥 + 18 = 0
3.
MULTIPLE CHOICE QUESTION
10 mins • 3 pts
3. Sebuah bilangan terdiri atas 3 angka. Jumlah ketiga angkanya sama dengan 16. Jumlah angka pertama dan angka kedua sama dengan angka ketiga dikurangi dua. Persamaan matematika yang sesuai dengan soal adalah… .
A. 𝑥 + 𝑦 + 𝑧 = 16; 𝑥 + 𝑦 – 𝑧 = – 2
B. 𝑥 + 𝑦 + 𝑧 = – 2; 𝑥 + 𝑦 – 𝑧 = 16
C. 𝑥 + 𝑦 + 𝑧 = 3; 𝑥 + 𝑦 + 𝑧 = 16
D. 𝑥 + 𝑦 – 𝑧 = – 2; 𝑥 + 𝑦 + 𝑧 = 3
E. 𝑥 + 𝑦 + 𝑧 = 3; 𝑥 + 𝑦 – 𝑧 = – 2
4.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
4. Bentuk-bentuk berikut merupakan bentuk persamaan linear tiga variabel.
I. 3𝑥 – 2𝑦 + 6 = 𝑧
II. 𝑥 + 𝑦 + 4𝑦 = 0
III. – 𝑧 + 4𝑧 + 7 = 8
IV. 𝑥 + 7𝑥 – 5𝑧 = 𝑦
V. 𝑥 + 7𝑥 + 18 = 𝑧
A. V dan II
A. V dan II
A. II dan V
A. I dan IV
A. IV dan V
5.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
5. Ibu Ira membeli 5 kg telur, 2 kg daging, dan 1 kg ikan dengan harga Rp 305.000,00. Ibu Budi membeli 3 kg telur dan 1 kg daging dengan harga Rp 131.000,00. Ibu Shifa membeli 3 kg daging dan 2 kg ikan dengan harga Rp 360.000,00. SPLTV dari permasalahan kontekstual ini adalah… .
5x + 2 y + z = 305000
A. {
2x + y = 131000
3y + 2z = 360000
5x + 2 y + z = 305000
A. {
3x + y = 131000
3y + z = 360000
5x + 2 y + z = 305000
A. {
B. {
3x + y = 131000
3y + 2z = 360000
5x + 2 y + z = 305000
3y + 2z = 131000
3x + 2z = 360000v
5x + 2 y + z = 305000
A. {
3x + z = 131000
3y + z = 360000
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
x + y + z = −6
6. Tentukan nilai z jika diketahui SPLTV berikut { x + y – 2z = 3 .
x – 2y + z = 9
A. – 5
B. – 3
C. – 1
D. 1
E. 2
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
7.Bonar memilikiduapekerjaanparuhwaktu. Untukmengantarbarang,Bonardibayar Rp15.000,00 per jam. Untukpekerjaanmencucipiring di restoran, Bonardibayar Rp9.000,00 per jam. Diatidakdapatbekerjalebihdari 10 jam. BonarmembutuhkanuangsebesarRp135.000,00.
Sistem pertidaksamaan yang sesuai dengan cerita di atas adalah :
X+Y≤10
15.000+9000≤135.000
X+Y≥10
15.000+9000≤135.000
X+Y≤10
15.000+9000≥35.000
X+Y≥10
15.000+9000≥135.000
X+Y≤10
15.000+9000>135.000
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