Matthew started with 12 stars in three groups of four.
Remove one group at a time. Find the missing numbers.
Students go to school for 4 days a week. Given that school vacations will start in eight weeks, how many school days are left before the vacation starts?
Multiplying by 4. Find the missing numbers.
HINT: Use the array to help you.
If a zebra has 4 legs, how many legs do 2, 3, and 4 zebras have?
In the forest, there are 8 fairies. There are 4 times as many pixies as fairies. What calculation should we do to find the number of pixies?