What is the sum of + + + ? What will you add to to get 10?

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1. 
   What is the sum of 2 + 8 + 3 + 7?
   

2. 
   What will you add to 6 to get 10?
   

3. 
   What is the missing number in the pattern below?
   

4, 7, 10, 13, 16, ____ , …

4. 
   What is the 10^th shape in the pattern below?
   

5. 
   Is the missing number odd or even?
   

8 + _____ = 12

6. 
   How many fives are there in 10?
   

7. 
   Cards A, B, and C have either numbers 21, 28, and 11 behind them.
   

Card A has an even number.
Card B is the sum of five and six.

What is the number written on Card C?

A

B

C

8. 
   The numbers in the box below are covered with a handkerchief. How many digit “2” are covered?
   

21	22	23	24	25
26	27	28	29	30
31	32	33	34	35

9. 
   B is greater than A. What is the digit B in
   

1B + B1 = 33 ?

10. 
    In Ana’s class, there are 3 boxes of different colors in her room.
    

The green box is not the smallest box.
The blue box is bigger than the green box.
Which box is the smallest?

11. 
    Observe the number sentence below.
    

+ 8 = 18
Find the value of .

12. 
    Based on the given pattern below, what is the value of P?
    

3, 4, 6, 9, 13, P …

13. 
    The illustration below shows the balance of fruit weights. Given the weight relations, how many guava(s) weigh the same as a pineapple?
    

?

14. 
    Ely is 6 years old this year. Her sister Jane is now 10 years old. What is the sum of their ages next year?
    

15. 
    How many sides does the arrow below have?
    

16. 
    How many corners does the figure below have?
    

17. 
    W hat is the total number of sides of the two stars below?
    

18. 
    How many triangles of different sizes are there in the figure below?
    

19. 
    How many squares can you see when you look from the top?
    

20. 
    How many rectangles are there in the figure?
    

7 cm

21. 
    What is the measure around the rectangle below?
    

5 cm

7 cm

22. 
    There are ten trees along the side of the straight road. The trees are 10 meters apart. What is the distance between the first and the tenth tree?
    

23. 
    I f you cut the below pizza twice, how many equal pieces can you make?
    

24. 
    Arrange the letters of the word ICE. How many arrangements can you make?
    

(Example: CIE and IEC)

25. 
    Mother separates 50 bananas into 5 plastic bags with equal number of bananas in each bag. How many bananas are there in each bag?
    

26. 
    What is the largest 2-digit odd number that can be formed by the digits 0, 1 and 2, if each digit can only be used once?
    

27. 
    If you were to choose two different fruits from an apple, an orange, and a pear, how many choices do you have?
    

28. 
    If you will form two-digit numbers with different digits using 1, 2, 3 and 4, how many of these are odd and greater than 20?
    

29. 
    Three friends Mar, Jose and Gloria are to be seated in a row. In how many ways can they sit if Gloria chooses to sit between the boys?
    

30. 
    Alberto is playing with his 1 toy train and 3 different toy cars. How many possible sets of a toy train and a toy car can he play with?
    

C O N G R A T U L A T I O N S!
You already reached the end of this challenge. Mabuhay!