Write six hundred and twenty eight as a numeral.

3 groups of 7 makes

• 10

• 21

What comes next?

16 20 24 28 ______

Half of a number is 12. What is the number?

How many Sundays are there in February?

What day will be be the 1st of March?

50  $+$  9 $+$  700 $=$  

 $\frac{1}{4}$  of 28  $=$  

21     $-$  7    $-$    7    = 

What is the sum of 43 and 17