Operation (+ or -)
+ or =?
What is the difference of 15 and 10?
Subtraction! -
5
+ 9
19
Travis has 28 goldfish. Caycen has 21 angelfish. How many more fish does Travis have than Caycen?
Travis has 7 more
+ or -?
Jessica has 10 crayons. Sahasra has 8 crayons. How many do they have all together?
18
28
- 11
17
James has 57 chocolate truffles. Taylor has 7 fewer than James. Taylor gives 6 to her classmate. How many chocolate truffles does Taylor have now?
Taylor has 44 chocolate truffles
+ or -?
Draw the bar diagram:
30 fish all together
19 blue fish
____ red fish?
30-19
=11 red fish
- 19
14
Liam has 30 Pokemon cards. Maverick has 38 Pokemon cards. Chase has 40 Pokemon cards. How many fewer Pokemon cards does Maverick have than Chase?
Draw on the board:
+ or - ?
Wren owns 45 Dr.Seuss books. She gives 32 Dr.Seuss books to Mia. How many does Wren have now?
Tell Ms. Catli where to place the numbers in a bar diagram.
45 on top (total)
32 on one half
45-32= 13
+23
101
Students- Draw a bar diagram and answer the problem:
Lexi buys a lot of Squishmallows. She starts out with 30. Then her good friend Maddy buys her 35 more Squishmallows! How many Squishmallows does Lexi have now?
65 Squishmallows
*65 on top
*30 and 35 on the bottoms
*30+35=65
Which TWO operations should we use?
Faith makes 52 scones for the class bake sale. She sells 16 muffins on Monday. She sells 22 muffins on Tuesday. How many muffins does Faith have left to sell?
1.
2.
1. 16+22= 38 (Add)
2. 52-38= 14 (Subtract)
Faith has 14 muffins left to sell.
- 68
28
Students: Draw a bar diagram and answer the problem.
Leila bought a box of 70 smelly markers. She gives 28 smelly markers to Andy. How many smelly markers does Leila have now?
Leila has 42 smelly markers left
*70 on top
*28 and 42 on the bottom
*70-28= 42