Fifth Grade Challenging Math

521) It is June 12^{th} 9:00 am according to your clock (Your clock shows the date). If you turn the minute hand counter clockwise 30 rounds, what date and time does the clock show?
522) All the squares are congruent with a unit length. Calculate the area shaded purple.
523) Melvin's watch goes 2 minutes faster than it supposed to move every hour. He set the watch at 8:00 am in the morning to a correct time. (a) What time does his watch show at 1:00 pm that day? (b) When Melvin's watch shows 3:14 pm, what is the correct time?
524) Find the sequence and fill in the blanks 64, 32, 16, 8, 4, __, 1
525) Smart multiplications a) 65 x 101 = b) 75 x 102 =
More challenging math problems for fifth grade: 15
610
1115
1620
2125
2630
3135
3640
4145
4650
5160
6170 7180
