Make with connecting cubes
Make groups of 10 with 10 connecting cubes. How many tens do you have?
1
Show why 1 ten means the same as 10 ones.
Draw ten together in a group and ten apart. Write 10=10.
Make groups of 10 with 40 connecting cubes. How many tens do you have?
4
How could you see that 40 is more than 30 just by looking at the numbers? (Also show me)
The digits 3 and 4 in 30 and 40 indicate a number of 10s. Since 4 is more than 3, 4 tens is 40 ones and that’s more than 3 tens or 30 ones.
Make groups of 10 with 20 connecting cubes. How many tens do you have?
2
Draw 1 ten and 10 more ones. How many tens in all?
2 tens; 20 ones
Make groups of 10 with 30 connecting cubes. How many tens do you have?
3
Ana counts 3 tens. Micah counts 20 ones. Which is more? How do you know?
You can figure out by: building each group and counting them OR
Think of 3 tens as 30 ones and compare 20 ones to 30 ones OR
Think of 20 as 2 tens and compare 3 tens to 2 tens
Make groups of 10 with 50 connecting cubes. How many tens do you have?
5
Draw 20 beach balls. Show how you know you have 2 tens.
Circle 2 groups of ten. 20 ones = 2 tens