Mental Addition Strategies
How could you solve the following by Making a 10:
7+5
What is adding 3 to the 7 to make a ten, then adding 2 more for a sum of 12 OR adding 5 to the 5 to make a ten, then adding 2 more for a sum of 12
What 4 equations belong in the fact family of the following numbers: 9, 13, 4
What is 9+4=13, 4+9=13, 13-9=4, and 13-4=9
Elise has 3 cookies. Olivia has 12 more cookies than Elise. How many cookies does Olivia have?
What is 15 cookies
True or False: Bar and Picture Graphs can be used to show the same data.
What is true
Mrs. Scozz prints out 25 papers. She recycles 12 of them. Then, she prints out 4 more. How many papers does she have now?
What is 17 papers
Which expressions can be used to find 8+9? (choose all that apply)
a) 9-8=1
b) 8+8+1
c) 9+9+1
d) 10+7
What is B and D
Find 21-6. Show your work
work MUST be shown:) the answer is 15
Asher buys 14 books from Inkwood. 5 of them are fiction and the rest are nonfiction. How many of the books are nonfiction?
What is 9 nonfiction books
How many more people voted for Computer than Reading as their favorite Rainy Day activity?
What is 5 more students
Nora gets 7 pieces of candy on Halloween. Keegan gives her 3 more pieces. Then, she gets 10 additional pieces after trick or treating. How many pieces of candy does she have now?
What is 20 pieces
What is FALSE
- they need to either do 5+5 then add 1 or 6+6 then take away 1
How can you count on to find the answer to the following problem: 17-13
You would start at the 13 and count up to the 17. There would be a difference of 4 jumps.
Write your own 1 step word problem involving the number bond of 6, 8, and 14
answers will vary
How many children voted for apples as their favorite fruit?
What is 8 children
Write your own 2 step word problem that makes sense.
answers will vary
Model how someone can count on to solve 16+5? What is the sum?
What is starting with 16 and counting on from there 5 times to get a sum of 21.
Name the 3 parts of a subtraction equation.
What is the minuend, the subtrahend, and the difference
How many total children voted for their favorite color in the survey?
What is 35 students total
Which strategy makes the most sense to solve the following problem (making a 10, doubles, or counting on?)
9+7
What is Making a 10, because 9 is so close to 10.
Which equations CAN be used to solve the following story problem:
Mrs. Scozz has 12 brownies and 3 cookies. She eats some. Then, she has 6 desserts left. How many desserts does she eat?
a) 15 + 6= ?
b) 3+12= ?
c) 15 - 6= ?
d) 16 - 6=?
What is B and C
Draw a bar graph based on the following data:
Favorite Subject:
Reading- 4
Writing- 6
Math- 8
Science- 3
Must include:
title, x and y axis labels, bars going up to 8