What's My Number?
I have 1 rod and 3 ones.
13
Draw the base ten model for 19.
1 ten 9 ones
Is 12 and 21 the same number? Explain
no, because 12 has 1 ten and 2 ones and 21 has 2 tens and 1 one
10 more than 7
17
Look at the number 11
How many groups of ten are in 11?
How many leftovers?
1 group of ten with 1 leftover.
I have 2 rods and 4 ones.
24
Draw the base ten model for 15.
1 ten 5 ones
Is 24 and 42 he same number? Explain
no, because 24 has 2 tens and 4 ones and 42 has 4 tens and 2 ones
10 less than 24
14
Look at the number 20
How many groups of ten are in 20?
How many leftovers?
2 groups of ten with 0 leftover.
I have 2 rod and 17 ones.
37
Draw the base ten model for 20.
2 tens and 0 ones
Is 13 and 31 the same number? Explain
no, because 13 has 1 ten and 3 ones and 31 has 3 tens and 1 one
10 more than 38
48
Look at the number 32
How many groups of ten are in 32?
How many leftovers?
3 groups of ten with 2 leftover.
I have 2 rods and 11 ones.
31
Draw the base ten model for 41.
4 tens 1 one
Is 17 and 71 the same number? Explain
no, because 17 has 1 ten and 7 ones and 72 has 7 tens and 1 one
10 less than 45
35
Look at the number 44
How many groups of ten are in 44?
How many leftovers?
4 groups of ten with 4 leftover.
I have 4 rods and 0 ones.
40
Draw the base ten model for 50.
5 tens 0 ones
Is 15 and 51 the same number? Explain
no, because 15 has 1 ten and 5 ones and 51 has 5 tens and 1 one
10 less than 50.
40
Look at the number 50
How many groups of ten are in 50?
How many leftovers?
5 groups of ten with 0 leftover.