Adding and Subtracting by Tens, Hundreds, Thousands, Ten Thousands and Hundred Thousands
Make this visual aid to teach children about adding and subtracting by place values.
Get a sentence strip (or a long strip of cardstock) Print the numbers and cut them out. Be sure to leave the extra white space above and below each row of numbers.
Measure out with a pencil where each strip of numbers will go on the sentence strip. Make dots at the top and bottom of each side of a number box.
Cut between the two sets of dots for each number strip.
Insert the number strips between the two slits to display one number at a time. Write the place values above each slot. Pull the strips up and down to add or subtract by a given place value.
To use this tool for instruction, give children number problems such as these:
Make the number 683,592
Once students have had practice time together using this, break them into pairs and have them use dice to decide a number, then the printable cards (placed in a pile, face down) to add or subtract by a place value.