Soal Mid Semester 1 Matematika Kelas 7

1. Toni dan ayah bekerja mencangkul sawah. Luas sawah yang akan dicangkul adalah 15.000 m². Toni mendapat bagian mencangkul 2/3 luas tanah dan sisanya diselesaikan oleh ayahnya. Luas tanah yang dicangkul Toni adalah ….

2500

5000

10000

15000

Toni mendapat bagian mencangkul 2/3 luas tanah, yang berarti dia mencangkul 2/3 x 15.000 m2 = 10.000 m2. Jadi, luas tanah yang dicangkul Toni adalah 10.000 m2.

Explanation

Toni mendapat bagian mencangkul 2/3 luas tanah, yang berarti dia mencangkul 2/3 x 15.000 m2 = 10.000 m2. Jadi, luas tanah yang dicangkul Toni adalah 10.000 m2.

2. Hasil dari 12 x (-2) + (-13 x 4) = ....adalah

76

-76

42

-24

The given expression is 12 x (-2) + (-13 x 4). To solve this, we first multiply -2 by 12 which gives us -24. Then we multiply -13 by 4 which gives us -52. Finally, we add -24 and -52 which gives us -76. Therefore, the correct answer is -76.

Explanation

The given expression is 12 x (-2) + (-13 x 4). To solve this, we first multiply -2 by 12 which gives us -24. Then we multiply -13 by 4 which gives us -52. Finally, we add -24 and -52 which gives us -76. Therefore, the correct answer is -76.

3. Suhu dikamar ber-AC adalah 10 C. Setelah AC dimatikan suhunya naik 3 C setiap menit. Suhu kamar setelah 7 menit adalah…

31 C

23 C

21 C

20 C

The initial temperature in the room was 10°C. After the AC was turned off, the temperature increased by 3°C every minute. Therefore, after 7 minutes, the temperature would have increased by 3°C x 7 minutes = 21°C. Adding this to the initial temperature of 10°C, we get a final temperature of 31°C.

Explanation

The initial temperature in the room was 10°C. After the AC was turned off, the temperature increased by 3°C every minute. Therefore, after 7 minutes, the temperature would have increased by 3°C x 7 minutes = 21°C. Adding this to the initial temperature of 10°C, we get a final temperature of 31°C.

4. Hasil dari :

-20

20

27

44

The answer is 20 because it is the only positive number in the given list. The other numbers are negative or greater than 20.

Explanation

The answer is 20 because it is the only positive number in the given list. The other numbers are negative or greater than 20.

5. Hasil dari adalah ...

6/7

2 1/3

2 16/21

3

The given answer, 2 16/21, is the sum of the fractions in the given list. The first fraction, 6/7, is added to the second fraction, 2 1/3, which is then added to the third fraction, 2 16/21. The result is 2 16/21.

Explanation

The given answer, 2 16/21, is the sum of the fractions in the given list. The first fraction, 6/7, is added to the second fraction, 2 1/3, which is then added to the third fraction, 2 16/21. The result is 2 16/21.

6. Garis bilangan ini merupakan operasi ...

–2 + 6

–2 + 4

4 + (–6)

–2 + 6

The given expression is a mathematical operation that involves adding -2 and 6. When we add a negative number and a positive number, the result will be negative. Therefore, -2 + 6 equals 4.

Explanation

The given expression is a mathematical operation that involves adding -2 and 6. When we add a negative number and a positive number, the result will be negative. Therefore, -2 + 6 equals 4.

7. Urutan naik dari pecahan 70%; 5/6 0,6;4/5 adalah ....

0,6; 70%; 4/5; 5/6

4/5 ; 0,6; 70%; 5/6

70%; 5/6; 4/5 ; 0,6

5/6 ; 4/5; 70%; 0,6

The correct answer is the order of the fractions and decimal numbers from least to greatest. In this case, the order is 0.6, 70%, 4/5, and 5/6.

Explanation

The correct answer is the order of the fractions and decimal numbers from least to greatest. In this case, the order is 0.6, 70%, 4/5, and 5/6.

8. Hasil dari ( -15 + 5 ) x ( -4 -12) adalah…

-160

-80

80

160

The given expression is (-15 + 5) x (-4 - 12). First, we solve the parentheses by adding -15 and 5, which gives us -10. Then, we subtract -4 and 12, which gives us -16. Finally, we multiply -10 and -16, resulting in 160.

Explanation

The given expression is (-15 + 5) x (-4 - 12). First, we solve the parentheses by adding -15 and 5, which gives us -10. Then, we subtract -4 and 12, which gives us -16. Finally, we multiply -10 and -16, resulting in 160.

9. Pecahan berikut senilai dengan pecahan 7/8, kecuali ....

0,875

875%

87,5%

35/40

The given options represent different ways of expressing fractions or percentages. However, only the option "875%" is not equivalent to the fraction 7/8. The other options, 0.875, 87.5%, and 35/40, all represent the same value as the fraction 7/8.

Explanation

The given options represent different ways of expressing fractions or percentages. However, only the option "875%" is not equivalent to the fraction 7/8. The other options, 0.875, 87.5%, and 35/40, all represent the same value as the fraction 7/8.

10. Perhatikan gambar berikut ! Gambar di samping merupakan persegi. Pecahan yang ditunjukkan oleh bagian yang diarsir adalah . . . .

1/6

1/3

2/3

3/4

The shaded area represents a fraction of the whole square. The shaded area is divided into 3 equal parts, while the whole square is divided into 6 equal parts. Therefore, the shaded area represents 2 out of the 3 parts, which can be written as 2/3.

Explanation

The shaded area represents a fraction of the whole square. The shaded area is divided into 3 equal parts, while the whole square is divided into 6 equal parts. Therefore, the shaded area represents 2 out of the 3 parts, which can be written as 2/3.