Reread them Do I make snse Did answer the question Did I follow the directions? Under name in green. Put in top drawer. Indepdnet tasks—paper slide, read, job applications, etc.
Making sense of division October 29, 2013 Making sense of division
What do you know about division? Think Pair Share
Division Show 35 ÷ 5 with your base ten blocks Write the inverse multiplication sentence that this also represents
35 ÷ 5 = x x = 7 The 5 tells you the number of groups! You have to figure out how many are in each group the x!
Multiplication & Division are related 35 ÷ 5 =7 5 x 7 = 35 How are multiplication and division related? What vocabulary do we use to explain the parts of a multiplication problem? How do these words connect to the division problem
Division Vocabulary dividend- the number that is divided Divisor- the number that divides the dividend (one of the factors in multiplication); it is the known factor in division Quotient- the result of the division (the other factor in multiplication); the unknown factor in division The order of the factors in multiplication doesn’t affect the answer because of the commutative property, but the order in a division problem is important!
Ungrouping When you did 35 ÷ 5, what did you ungroup to make equal groups of 5?
When you figure it out, explain what you did in your spiral notebook Now try… 350 ÷ 5 = x When you figure it out, explain what you did in your spiral notebook
350 ÷ 5 = x 5 groups! Draw those first.
350 ÷ 5 = x Now figure out how many go in each group! We know 5 x 7 = 35, so we also know that 5 x 70 = 350! Check answer with multiplication!
104 ÷ 4 = x Draw 4 groups! I can regroup my 104 into tens and divide that first. I can do 2 tens in each group. This means I have given out/divided 80. 104 – 80 = 24 “pieces” left to divide among the four groups…
104 ÷ 4 = x 104 – 80 = 24 “pieces” left to divide among the four groups… 24 ÷ 4 = 6! Give 6 more to each group. Each group has 26 pieces. 104 ÷ 4 = 26.
Check with multiplication! 104 ÷ 4 = 26 26 x 4 = 104