One minute is equal to 60 seconds, and an hour is equal to 60 minutes. Then, is an hour equal to 360 seconds, 120 seconds, or 3600 seconds? How to row

One minute is equal to 60 seconds, and an hour is equal to 60 minutes. Then, is an hour equal to 360 seconds, 120 seconds, or 3600 seconds? How to row

One minute is 60 seconds, so an hour is 3600 seconds
The calculation of (15 / 2 + 35 / 4) × 2 / 5 needs a simple process
(15/2+35/4)×2/5
=15/2×2/5+35/4×2/5
=3+7/2
=13/2
How many minutes is 3600 seconds?
I'm a fourth grade student. I'm not good at arithmetic. Please help me. Thank you first~~~~
=60 minutes = 1 hour
A simple method 58 × 39 + 41 × 39 + 39
39x(58+41+1)=39x100
5:30 p.m. minus 7:40 a.m
159 - (62.39 + 58) simple calculation
I'm so anxious
159-58-62.39
=101-62.39
=100+1-（62+0.39）
=100-62+（1-0.39）
=38.61
How to write at 9:30, 2:20, 7:40 and 5:15
2,262,050 two million,two hundred and sixty-two,and fifty
Half past nine
777 seven hundred and seventy-seven
half past nine
nine thirty
two twenty
twenty past two
seven forty
twenty to eight
five fifteen
a quarter past five
fifteen past five
Hope to help the landlord
nine thirty
two twenty
seven forty
five fifteen
half past nine o'clock
twenty past two o'clock
twenty to eight
a quarter past five
half past nine
nine thirty
two twenty
twenty past two
seven forty
twenty to eight
five fifteen
a quarter past five
fifteen past five
half past nine
half to ten
nine thirty
two twenty
twenty past two
seven forty
twenty to eight
five fifteen
a quarter past five
fifteen past five
All right. We'll use past... Before half time
half past nine
half to ten
nine thirty
two twenty
twenty past two
seven forty
twenty to eight
five fifteen
a quarter past five
fifteen past five
It's OK to use past before half time. 5:29 means twenty nine past five. After half time, that is to say thirty minutes later, 5:31 means twenty nine to six
Or read for hours and then minutes
9：30 nine thirty/half past nine
2:20 two twenty/twenty past two
7:40 seven forty/twenty to eight
5:15 five fifteen/a quarter past five
half past nine
two twenty
twenty to eight
a quarter past five
Fully integrated into day V
How much is 58 × 146-58 × 45-58 calculated by a simple method
Multiplicative binding rate
The English words at 9:30, 7:40 and 5:15 are urgent
9:30 half past nine（nine thirty）
2:20 twenty past two（two twenty）
7:40 twenty to night（seven forty）
5:15 a quarter past five（five fifteen）
Calculation by simple method 〔 3.2-3.2 × (30.4-29.85) 〕 1.8
3.2｛30.4-【1+29.85】｝?/1.8
=3.2*{-0.45}/1.8
=16*[-0.05]
=-0.8