Tens and Ones
How many tens in 45
4 tens = 40
Order these numbers from least to greatest
23, 12, 67, 42, 97
12, 23, 42, 67, 97
Write 62 in expanded form.
60+2
Is it odd or even?
9
odd
Count forward by 2's to 20 starting at 2
2,4,6,8,10,12,14,16,18,20
How many ones in 49
9
Order these numbers from greatest to least:
21, 56, 12, 90, 44
90, 56, 44, 21, 12
Write 93 in expanded form.
90+3
Is it odd or even?
6
even
Count forwards by 5's starting at 10 up to 50.
5,10,15,20,25,30,35,40,45,50
What is the value of 8 in the number 38?
8 ones
Mrs. Ashacker ordered these numbers from least to greatest. Is she correct?
31, 13, 64, 78, 77
13, 31, 64, 77, 78
Write 12 in expanded form.
10+2
Is it odd or even? How do you know?
56
even
you look at the ones place and 6 is an even number because you can share it equally.
Count backwards by 10's starting at 84.
84,74,64,54,44,34,24,14,4
What is the value of the underlined digit?
125
100
Where would you put 10 on this number line?
0__________________15___________________25
0________10__________15_________________25
Write 100 in expanded form
100+0+0
87
odd
7 is an odd number in the ones place. You can't share 7 equally - there is a left over
no
26,28,30,32,34,36
What is the value of the underlined digit?
345
4 tens or 40
How would you explain to a friend that 14 is less than 41?
14 has one ten and 4 ones
41 is greater because it has 4 tens and 1 one
41 has 3 more tens than 14 so it is a larger number.
Write 190 in expanded form.
100+90
How do you know if a number is odd or even?
You say odd numbers when you count by 2's starting at 1. You cannot share odd numbers equally. There is always a leftover.
Count backwards by 10's starting at 98. Will you say 48?
Yes!
98,88,78,68,58,48,