

Classroom chapter 1 - 3
Presentation
•
Mathematics
•
4th Grade
•
Easy
Parinda Simanjuntak
Used 3+ times
FREE Resource
21 Slides • 6 Questions
1
Chapter 1
number in word

2
susunan number
Hundred thousands (ada 6 dalam sebuah bilangan)
Thousands (ada 4/5 dalam sebuah bilangan)
hundreds ((ada 3 dalam sebuah bilangan)
tens (masih normal)
ones (normal)
3
Multiple Choice
write the number in word of 46.985
fourty six hundred nine thousand and eighty five
forty six thousand nine hundred and eighty five
forty six thousands nine hundreds and eighty five
fourty six thousand nine hundred and eighty five
4
Multiple Choice
Write number in numerals of "two thousand and eighty"
2.800
28.000
2.080
20.080
5
caranya two thousand and eighty
two thousand = 2.000
eighty = 80
lalu kamu tambahkan jadi 2.080
6
Word Problem in multiplication and division
Jika dapat soal seperti ini baca soal baik-baik dan cari setiap kata kunci di soal
7
Multiple Choice
mother bought 500 tins of biscuit. Each tin had 10 of biscuits. If she sold 200 tins, how much biscuit had he left?
10.000
3.000
25
30
8
mother bought 500 tins of biscuit. Each tin had 10 of biscuits. If she sold 200 tins, how much biscuit had he left?
kata kunci pertama "bought" artinya membeli kalau membeli artinya punya. Berarti tulis dulu bilangan "500"
kata kunci kedua "each" artinya setiap. Kalau ada kata 'each' biasanya/kebanyakan itu merupakan soal perkalian dan pembagian. lalu kamu baca lagi di situ dari kata 'TINS' ke 'Biscuit" artinya dari yang sedikit ke banyak berarti PERKALIAN (x)
kata kunci ketiga "sold" artinya menjual. menjual berarti berkurang yang artinya pengurangan (-)
9
Lalu kamu jangan lupa baca ending/akhir soal
how much biscuit had he left?
10
how much biscuit had he left? (BISCUIT bukan TIN)
500 tins
each tin had 10 biscuits
sold 200 tins bicuit
maka 500 - 200 = 300 x 10 = 3.000
11
Factor
Pembagi
12
Multiple Choice
which number have 10 as a factor!
25
12
75
70
13
angka mana yang memiliki 10 sebagai faktor!
artinya yang mana saja yang bisa di bagi 10
14
angka mana yang memiliki 10 sebagai faktor!
25 (25 tidak bisa di bagi 10 karena ada sisa)
12 (12 tidak bisa di bagi 10 karena ada sisa)
75 (75 tidak bisa di bagi 10 karena ada sisa)
70 (bisa di bagi 10 karena tidak ada sisa yaitu 70 :10= 7)
15
Prime factorisation
kalau dengar kata ini harus ingat pohon faktor
16
Prime factorisation artinya perkalian bilangan prima (di cari dengan pohon faktor)
17
Multiple Choice
the prime factorisation of 68 is ....
2 x 2 x 17
2 x 2 x 16
2 x 2 x 3 x 3
2 x 17
18
carinya dengan cara ini lalu kamu tulis perkalian bilangan prima saja
19
angka prima yaitu yang di sebelah kiri dan yang paling akahir di kanan
artinya 2 x 2 x 17
20
Ingat LCM
21
Multiple Choice
Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 25 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?
40
375
75
22
Dua tanda neon dinyalakan pada saat bersamaan. Kedua tanda berkedip saat dihidupkan. Satu tanda berkedip setiap 25 detik. Tanda lainnya berkedip setiap 15 detik. Dalam berapa detik mereka akan berkedip bersama lagi?
23
Jika ada kat "together again" itu LCM
kalau ada kata the most number/greatest number itu HCF
24
Cara mencari LCM
Buat pohon faktor dari 15 dan 25
setelah itu cari PF (Prime factorisation)
baru cari LCM dengan cara menuliskan memasukkan semua angka, TAPI jika ada angka yang sama plih yang paling banyak muncul
25
Ini adalah PF dari 15 dan 25
Angka 5: Di 15 muncul angka 5 ada1 kali dan di 25 muncul 5 dua kali. Kalau LCM pilih yang banyak muncul
Angka 3 hanya muncul di 15 tetapi LCM itu semua angka dimasukkan berarti masukkan angka 3
maka menjadi 5 X 5 X 3 = 75
26
they will blink together again in 75 seconds
27
Semoga kamu Ingat dan berhasil di PTS/Mid exam nanti
Chapter 1
number in word

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