Search Results For “thinking of a number”

Add 9 to any 2-digit number.

Add 9 to any 2-digit number.

Add 11 to any 2-digit number.

Find the missing number.

Add 19 to any 2-digit number.

Add 21 to any 2-digit number.

Find the third missing number to make 100.

Add a single digit to a 3-digit number crossing the tens boundary.

Add mentally a single digit to a 3-digit number, not crossing the tens.

Using a number line to help with adding multiples of 100.

Add mentally a single digit to a 3-digit number.

Completing tricky number sequences.