
SKB PGSD Matematika sesuai FR
Authored by Jezzy Oktavia
Mathematics
Professional Development

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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
12111103 basis 3 = ... basis 5.
112013
112103
110213
121013
Answer explanation
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jila luas lingkaran 16π, berapa keliling lingkaran?
2π
4π
4√2π
8π
Answer explanation
Luas lingkaran = πr²
16π = πr²
16 = r²
r = 4
Keliling lingkaran = 2πr
= 2π x 4
= 8π
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
FPB dari 54, 72, dan 90 adalah... .
9
18
27
54
Answer explanation
Trik 3 angka FPB :
Lihat selisihnya saja. 😅
54, 72, 90
72 - 54 = 18
90 - 72 = 18
FPB 18 dan 18 adalah 18
Berarti hasilnya 18. 😎
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rata² kelas = 13
A = 15
B= 12
C = 11
D = 15
E = ...
Nilai E adalah... .
10
11
12
13
Answer explanation
Rata-rata nilai kelas = 13
Sebanyak 5 orang
Jumlah nilai = Rerata x n = 13 x 5 = 65
Jumlah nilai 4 orang = 53
Nilai E = 65-53 = 12
√ Trik
Rata² kan 13.. jadi patokan 13...
15 = +2
12 = -1
11 = -2
15 = +2
... =(Sini harus ngimbangin kelebihan di atas)
2-1-2+2=1
Karena hasilnya + maka kelebihan 1, supaya nol maka harus -1
Jadi, 13-1 = 12. 😅
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hari Senin sangat dingin, hari Selasa semakin dingin 2°C, hari Rabu menghangat 4°, sampai hari Jum'at suhunya -14°. Berapakah suhu hari Senin?
16°
-16°
12
-12°
Answer explanation
x-2°+4°= -14°
x+2°=-14°
x=-14°-2°= -16°
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jumlah diagonal bangun datar segi dua belas beraturan adalah... buah.
27
35
44
54
Answer explanation
1/2 x n x (n - 3)
1/2 x 12 x (12 - 3) = 54
atau
n (n - 3)/2 = 12 (12 - 3)/2 = 12 x 9/2 = 108/2 = 54
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan gambar di atas! Luas daerah yang diarsir adalah... .
42 cm²
54 cm²
154 cm²
196 cm²
Answer explanation
Luas daerah yang diarsir =
L persegi - L lingkaran
(s x s) - (πr²)
(14 x 14) - (22/7 x 7 x 7)
= 196 - 154
= 42 cm²
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