Blocks
There are _____ ones in a ten.
There are 10 ones in a ten.
What is a sum?
A sum is the total amount when numbers, amounts, or items are added together.
Key words: total amount
What is 58 + 27? Regroup if you need to.
58 + 17 = 75
Jenna reads 53 pages in a book. Then she reads 9 more pages. How many pages does Jena read?
53 + 9 = ______
53 + 9 = 62
There are ____ ones in the number 27.
There are 7 ones in the number 27.
What does difference mean?
The result of subtracting one number from another.
Subtract 26 from 74. Regroup if you need to.
74 - 26 = 48
Deon has 68 pencils. He gives 15 pencils to friends. How many pencils does Deon have left?
______ pencils
53 pencils
There are ____ tens in the number 62.
There are 6 tens in the number 62.
What does regroup mean?
Making groups of ten when using addition or subtraction.
Key words: making groups of ten
What is 87 - 29 =____ ?
Regroup if you need to.
87 - 29 = 58
Max has 97 cents. He gives 23 cents to friends. How many cents does Max have left?
______ cents
74 cents
Holly uses these blocks to add 37 and 5.
+
How many tens and ones does Holly have when she regroups her blocks?
Holly has 4 tens and 2 ones.
If a question says "gives away" are you doing addition or subtraction.
Subtraction
What is 87 - 72 = ____?
Regroup if you need to.
87 - 72 = 15
Caroline has 56 strawberries and 37 Blueberries.
Part A: How can Caroline show the number of strawberries and blueberries using tens and ones?
8 tens and 3 ones
9 tens and 0 ones
9 tens and 3 ones
9 tens and 3 ones
In the morning, Mr. Lopez sees 33 cars parked in a parking lot. In the afternoon, some of the cars have left. Now there are 13 cars parked in the parking lot.
How many cars left the parking lot? Use blocks to solve.
20 23 30
20 cars left the parking lot.
If a question says "gains" are you doing addition or subtraction.
Addition
Which shows a correct strategy to add 48 + 26?
48 + 2 + 6
48 + 10 + 6
48 + 10 + 10 + 6
48 + 10 + 10 + 6
Caroline has 56 strawberries and 37 Blueberries.
Part B: How many strawberries and blueberries does Caroline have?
____ strawberries and blueberries
93 strawberries and blueberries