Estadistica

1) Solve the pages 171 until 174 of the book. When you finish add the pages to the rest of the reinforcement activity 2) ARRAYS You can find the answer to basic multiplication facts by making asymbol picture called an array. An array is a group of symbols or drawings arranged in straight rows and columns. xxxxxxx x x x x x x x 3 rows of 7 symbols equals 21 symbols. xxxxxxx 3 x 7 = 21

Draw anarray to find the answer to each multiplication fact below. Be sure you draw your symbols or drawings in neat, straight rows and columns. 4x5= 6x4= 3x8=

3x9=

5x8=

7x4=

3) Multiply thenumbers below by using the distributive property. Multiply the tens and the ones place values separately and add the products. Look at the example 44 x 2 = (40 + 4) x 2 44 x 2 = (40 x 2) + ( 4 x 2) 44 x 2= 80 + 8 44 x 2 = 88

54 x 6 = ( 50 + 4 ) x 6 = ( ___ x 6 ) + ( ___ x 6 ) = 300 + ___ = ____ 16 x 5 = ( 10 + 6 ) x ___ = ( ___ x __ ) + ( ___ x __ ) = ____ + ___ = ___ 4) Fill in each square withsets of factors so that the products on the right-hand side and the bottom are correct.Look at the example

5) Fill the puzzle. Use the clues given above.

6) MULTIPLICATION SEARCH

Can youfind 20 multiplication facts in this puzzle? Circle each multiplication fact and its answer. Don't forget to add the x and = signs. 1. ____________________ 2. ____________________ 3.____________________ 4. ____________________ 5. ____________________ 6. ____________________ 7. ____________________ 8. ____________________ 9. ____________________ 10. ___________________

11. ____________________12. ____________________ 13. ____________________ 14. ____________________ 15. ____________________ 16. ____________________ 17. ____________________ 18. ____________________ 19. ____________________20. ____________________

7) Unscramble each set of digits to create a multiplication fact. Look at the example

SETS 8) Write the notation in two different ways for each set. S

S = {...