SME
Grade 1 Math · Problem type
Different names for the same number
Use this for “How many cubes? 3 towers of 10 and 14 more.”
Picture
37: thirty-seven
Rods are tens, small cubes are ones.
This is an example. Type the numbers from your problem to start.
Number
=
Tens
tens
+
Ones
ones
Number sentences
37 = 2 tens + 17 ones
Good to know
•
10 ones make 1 ten.
•
A number can have more than 9 ones: 2 tens and 17 ones is 37.
•
Trade 10 ones for 1 ten to write the number.
Step-by-step
WE KNOW
Tens: 2
Ones: 17
FIND
number
Step 1 · Find number
? = 2 tens + 17 ones
Count the tens by 10s. Then count on the ones.
2 tens = 20
17 ones = 1 ten and 7 ones
20 + 10 = 30
30 + 7 = 37
Number: 37
Check
Put the numbers back in. Both sides should match.
20 + 17 = 37 ✓
Topic check
See what you know: 5 questions on this topic
New questions each time. Pass to mark it complete.