Addition
What symbol do we use for addition?
+
What symbol do we use for subtraction?
-
What symbol do we use when multiplying?
x
What symbol do we use when dividing?
÷
Shelly has 26 socks. She buys 14 more at the store. How many socks does she have altogether?
40 socks
What place value do you always start in when adding?
The ones
What are some other words we use that mean subtract?
Take away, minus
What does it mean to multiply?
Example: 3 x 5
3 groups of 5
What does it mean to divide?
Ex: 14 ÷ 2
14 divided into 2 groups
or
14 divided into groups of 2
Brad baked 52 cookies. He gave 24 away to his friends. How many cookies does he have left?
28 cookies
Solve 34 + 27
(Show your work)
61
Solve 45 - 13
(Show your work)
32
Solve 7 x 6
42
Solve 36 ÷ 6
6
Misha has 4 bags. Each bag has 3 marbles in it. How many marbles does she have in all?
12 marbles
What is it called when 10 ones make a new 10, or when 10 tens make a new 100?
Regrouping
What is it called when you are subtracting but don't have enough ones?
Example: 31 - 19
Borrowing or unbundling
Solve 4 x 9
36
Solve 27 ÷ 3
9
Dylon has 54 pencils. He puts 5 pencils in each bag. How many bags of pencils does he have?
9 bags
Solve 564 + 126
(Show your work)
690
What place value do you start in when subtracting?
The ones
Solve 23 x 3
69
Solve 64 ÷ 8
8
1. Sarah found 3 bags with 6 books in each.
2. She gave 4 books away to her sister.
How many books does she have left?
14 books