Counting by whole tens

Mathematics · Number Representation & Place Value · ages 6-7

Name ______________________ Date ____________

Fifty is built from ten rods with no cubes left over. How many rods?
Answer: ______________
What does the 3 in 30 mean?
- 3 ones
- 3 hundreds
- 3 tens and 3 ones
- 3 tens
What does 30 mean?
- 3 tens and 0 ones
- 0 tens and 3 ones
- 3 tens and 3 ones
60 means 6 tens and 0 ones.
Circle one: True False
Sixty is a multiple of ten. Which multiple of ten comes just after sixty?
Answer: ______________
Leo has 9 tens rods and no unit cubes. What number does he have?
- 19
- 90
- 9
Which number has 4 tens and 0 ones?
- 40
- 4
- 14
- 44
Max says 70 matches 7 ones. Is Max right?
Circle one: True False
Nina says 40 means 4 ones and 0 tens. What is her mistake?
- She counted one extra ten
- She forgot a zero
- She swapped the tens and ones
Nine tens hide how many ones?
Answer: ______________

Answer key

For grown-ups. Fold this page away before handing over the rest.

5 · Fifty packs 5 tens and 0 ones, so 5 rods build it.
3 tens · The 3 sits in the tens place, so it means 3 tens and 0 ones.
3 tens and 0 ones · 30 is 3 whole tens, with no ones left over.
True · 60 is built from 6 whole tens, with no extra ones.
70 · The decades climb 60, 70, so 70 follows 60.
90 · 9 whole tens with no extra ones make 90.
40 · Four tens with an empty ones place make 40.
False · Max is wrong. Seventy matches 7 tens, which is far more than 7 ones.
She swapped the tens and ones · 40 means 4 tens and 0 ones. Nina mixed up which place is which.
90 · Each ten hides 10 ones, so 9 tens hide 90 ones.