Addition
Doubles
6+6=
12
10-5=
5
Mary has 15 apples.
Joe has 12 apples.
Who has more? Who has less?
Mary has more.
Joe has less.
Lexi had 3 maps, her sister gave her 2 more maps. Now how many maps does Lexi have?
Lexi has 6 maps.
Add 10
26+10=
36
20-20=
0
Frank has 18 pairs of shoes.
Erin has 11 pairs of shoes.
How many more pairs of shoes does Frank have than Erin?
7
If your teacher needs to add 4+47 will your teacher need to make 10? Draw a model.
Yes, 51 total
Model can show lines and dots
Tens
50+30=
80
15-7=
What addition problem helps you solve this? Choose all that apply.
a) 15+7= 22
b) 7+8 = 15
c) 7+9 = 16
d) 8+7 = 15
b and d
b) 7 + 8= 15 and
d) 8 + 7= 15
Logan has 8 books.
Maddie has 12 books.
Logan wants to have just as many books as Maddie. How many more does he need?
4
Jack and Annie have some pennies.
Jack has 64 pennies. Annie has fewer pennies than Jack.
Which could be Annie's pennies?
(Use a number line or number chart to help)
a) 66 pennies
b) 63 pennies
c) 65 pennies
d) 64 pennies
b) 63 pennies
3+2 = 4+ ____
1
80-30=
50
What is the missing symbol?
26_____26
=
George has 70 hats.
He gives 30 hats away.
How many hats does George have left?
Draw a model.
40
Model may vary
8+5+9=______
22
95-10=
85
Joshua found 3 acorns.
Lory found 10 leaves.
How many items did they find altogether? Who had more? Who had less? And how many more did one find than the other?
Altogether=13
More: Lory
Less: Joshua
7 more leaves than acorns
Mrs. Mancuso has 4 bags of apples. There are 10 apples in each bag. Her class eats 2 bags of apples. How many apples are left?
Bonus: Think of the addition and the subtraction equation
Mrs. Mancuso has 20 apples
Bonus:
40-20=20
20+20=40
or 4-2=2 or 2+2=40