Question

A.2½ jam=........menit b.1 jam 20 menit=........menit c.2 jam........detik d.3⅔ menit=....detik e.90 menit=.........jam

Answer 1

1 jam = 60 menit

1 menit = 60 detik

A. 2 1/2 jam x 60 menit

= (5/2 x 60) menit

= 5 x 30 menit

= 150 menit

B. 1  jam 20 menit

= (60 + 20) menit

= 80 menit

C. 2 jam

= (2 x 60 x 60) detik

= 2 x 3.600 detik

= 7.200 detik

D. 3 2/3 menit

= (11/3 x 60) detik

= 11 x 20 detik

= 220 detik

E. 90 menit

= (90 : 60) jam

= 9/6 jam

= 3/2 jam

= 1 1/2 jam