Build that number
Name 3 addition equations that equal 9
__ + __ = 9
__ + __ = 9
__ + __ = 9
3+6 or 6+3
2+7 or 7+2
1+8 or 8+1
4+5 or 5+4
What number is represented by this expanded form:
400+20+9
429
What number is represented by the words below?
Three hundred forty six
346
Lina has 7 stickers. Her friend gives her 5 more stickers. How many stickers does Lina have now?
1) Will our answer be larger or smaller than 7?
2) What equation will help us find the number of stickers Lina has now (x) ?
1) larger
2) 7+5=x or 5+7=x
I am an even number.
If you add 7 to me you get 25.
What number am I?
18
Name 3 addition equations that equal 10?
1+9 or 9+1
2+8 or 8+2
3+7 or 7+3
4+6 or 6+4
5+5
What number is represented by this expanded form:
1000+500+60+8
1568
What number is represented by the words below?
Two thousand one hundred seventy three
2173
There were 12 apples in a basket. The family ate 4 apples. How many apples are left in the basket?
1) Will our answer be larger or smaller than 12?
2) What equation will help us find the number of apples left in the basket (x) ?
1) Smaller
2) 12-4=x
I am greater than 40 but less than 50.
My digits add up to 9.
What number am I?
45
Name 3 subtraction equations that equal 2
__ - __ = 2
__ - __ = 2
__ - __ = 2
(lots of options)
10-8
9-7
8-6
5-3
3-1
4-2
6-4
What number is represented by this expanded form:
2000+300+7
2307
What number is represented by the words below?
Seven thousand twenty three
7023
Aiden has 15 pencils and Maya has 9 pencils.
How many more pencils does Aiden have than Maya?
1) Will our answer be bigger or smaller than 15?
2) What equation will help us find how many more pencils Aiden has than Maya (x)?
1) smaller
2) 15-9=x
I am a multiple of 5.
If you take away 15 from me you have 30 left.
What number am I?
45
Name 3 addition equations that equal 20
__+__=20
__+__=20
__+__=20
10+10
11+9
12+8
13+7
14+6
15+5
16+4
17+3
18+2
19+1
What number is represented by this expanded form:
1000+50+9
1059
What number is represented by the words below?
Three thousand three hundred and thirty
3330
A farmer has 22 chickens and 17 ducks.
How many more chickens than ducks does the farmer have?
1) Will our answer be larger or smaller than 22?
2) What equation will help us find how many more chickens the farmer has than ducks (x) ?
1) Smaller
2) 22-17=x
I am a two‑digit number.
My tens digit is one more than my ones digit.
The sum of my digits is 11.
What number am I?
65
Name 3 subtraction problems that equal 3
__-__=3
__-__=3
__-__=3
(lots of options)
10-7
9-6
8-5
7-4
6-3
5-2
4-1
What number is represented by this expanded form:
5000+600+7
5607
What number is represented by the words below?
Twelve thousand five hundred and 6
12506
Sam had some marbles. He found 3 more marbles and now has 10 marbles altogether.
How many marbles did Sam have at first?
1) Will our answer be larger or smaller than 10?
2) What equation will help us find the number of marbles Sam started with (X)?
1) Smaller
2) 10-3=x
I am between 60 and 80.
I am even.
When you add my two digits you get 11.
What number am I?
74