Count the balls in the abacus and add to 107.
Make sure all the three digits in the number are different
Divide the number shown by the number given
Write the number represented on the abacus and then rearrange the digits to form the smallest number
Subtract the given number from the number shown on the abacus
Count the number of beads for each place value
Add 6 balls to ones place and use regrouping.
Divide the number shown on the abacus by the given number
