Block 2: Addition and Subtraction

Adding multiples of one hundred by counting on

Adding multiples of one thousand by counting on.

Adding multiples of ten thousand by counting on.

Adding 5-digit numbers with the aid of squared paper.

Using the standard written method to add 5-digit numbers.

Write the missing digits to make the additions correct.

Subtract multiples of one thousand by counting back.

Subtract multiples of ten thousand by counting back.

Subtracting thousands mentally.

This is about as hard as it gets - a very tricky set of questions.

Write the missing digits to make the subtractions correct.

Word problems which require subtracting from numbers with-4 digits or more.