Fourth Grade Challenging Math ----------------------------------------------------------------------------
4-16) Find the sequence and fill in the blanks
a) 13, 31, 24, 42, 35, 53, ___, ___, 57, 75
b) 0, 1, 2, 3, 6, 11, 20, __, 68
4-17) A retirement home is going to plant trees around a square shaped pool that is 50 feet on each side. The trees are 5 feet apart. How many trees do they need to plant?
4-18) The 2nd pattern has 4 congruent triangles. The 3rd pattern has 9 congruent triangles. (Congruent triangles have the same size and shape.) a) What should the 4^{th} pattern look like? b) How many congruent triangles are there in the 4th pattern? 1 2 3
4
4-19) There are 4 people at a party. If each person shook hands once with all the others, how many hand shakes took place at the party?
4-20) You need to cut a wooden rod to 35 pieces. It takes 3 minutes to make 1 cut. How long does it take to complete the cuts?
More math problems for fourth grade:
1-5
6-10
11-15
16-20
21-25
26-30
31-35
36 -40
41-45 46-50
51-60
61-70
71-80
81-90 |