Second Grade Challenging Math
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2-11) Find the sequence and fill in the blanks 1, 2, 3, 5, 8, __, __ 
2-12) Subtraction: Fill in the blanks
| 8 | 4 |
|
| 4 | 6 | | - | ___ | ___ |
| - | ___ | ___ |
| 2 | 3 |
|
| 1 | 5 |
|
|
|
|
|
|
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| 6 | 8 |
|
| 1 | 3 | | - | ___ | ___ |
| - | ___ | ___ |
| 3 | 4 |
|
| 0 | 9 |
2-13) There are 4 balls in a box. They are
colored red, yellow, green and blue. The red ball is heavier than the yellow one, but lighter than the blue one. The green ball is heavier than the yellow one, but lighter than the red one. What color is the 3rd heaviest ball in the box?
2-14) It took Zack's family 3 hours and 30 minutes to drive to Disneyland. If they started at 6:30 am, what time did they arrive?
2-15) When the minute hand on a clock turns clockwise 1 full round, (a) how many hours have passed? (b) How many minutes have passed? 
More challenging math problems for 2nd 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
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