The Grade 3s will be having a math quiz on Monday, December 5, 2016. For the quiz, students need to know the following:
Learning Intention: We are learning to…
add and subtract 2 and 3-digit numbers mentally and in standard form
estimate the sum and difference
use CUBES to solve story problems involving addition and subtraction
Success Criteria
I can…
(with regrouping) (without regrouping)
122 122 122 128
+119 -119 +117 - 117
241 3 239 11
Possible strategies are:
Compensation, Counting on with Number Line, Partial Sums, Base Ten Model
Possible strategies are:
Counting on with a Number Line, Partial Differences, Base Ten Model, Counting Up, Friendly Numbers
***Students do not need to use all mental strategies.
76 + 42 = 134 – 25 =
80 + 40 = 120 130 – 30 = 100
Billy has 15 books. Sally has 23 books. How many books do they have altogether?
Circle: Circle the numbers
Underline: Underline the question
Box: Box the key words : altogether (+)
Evaluate: Evaluate and draw (use numbers, pictures, and/or words):
15 + 23 = 38
Base-ten blocks: |. . . . . + || . . . = ||| . . . . . . . .
I added the number of Billy’s books to the number of Sally’s books.
Students need to take home their math duotang in order to be well prepared for the quiz. They must bring their duotang back to school each day as we will be reviewing the concepts in class. Thank you!