
matematika
Presentation
•
Mathematics
•
10th Grade
•
Hard
Irawaty Irha
FREE Resource
5 Slides • 0 Questions
1
Pengukur waktu
1. Pengertian alat pengukur waktu
Alat pengukur waktu adalah instrumen atau alat yang digunakan untuk menghitung besaran waktu yang biasanya dalam satuan detik atau sekon.
2
2.cara mengukur waktu
untuk melakukan pengukuran waktu yang perlu diperhatikan adalah konsep dasar pengukuran waktu diantaraya:
1 jam =60 menit
1 menit =60 detik
1 jam =3600 detik
1 menit=1/60 jam
1 detik =1/60 menit
1 detik =1/3600 jam
3
3.jenis-jenis alat ukur waktu
Jenis-jenis alat ukur waktu antara lain :
a.jam dinding
b.arloji
c.stopwatch
4
contoh soal.
1.soal cerita
Bani mengerjakan tugas PR pada pukul 10.00 wib.Bani mengerjakan PR hingga selesai selama 1 jam 30 menit.Pukul berapa Beni selesai mengerjakan PR?
jawab:
waktu selesai=waktu mulai + lama waktu
=10.00 + 1.30
= 11.30
jadi,Bani selesai mengerjakan PR pada pukul 11.30 wib
5
2.contoh soal isian
1jam =.... menit
jawab:
1 jam =60 menit
Pengukur waktu
1. Pengertian alat pengukur waktu
Alat pengukur waktu adalah instrumen atau alat yang digunakan untuk menghitung besaran waktu yang biasanya dalam satuan detik atau sekon.
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