A simple activity to promote memorization of counting by 10s includes tossing a ball. Hold a ball and say the first number in the sequence: 10. Toss the ball to a child and upon catching it, the child says the next number in the sequence: 20. The ball is tossed back and forth, with each person who catches the ball saying the next number in the sequence.
On index cards, print the multiples of 10 up to 100 in large writing on the middle of the card and number the order of each in small writing on the card's left corner. Spread the cards out on a flat surface in a jumbled order. Invite children to arrange the cards in the correct order. To help students understand the correct order of the numbers, explain that the corner-left number on each card will indicate how they should be arranged: 1, 2, 3 and so forth. After the cards have been arranged in the correct order, have children state the numbers printed on the cards aloud.
Get kids physically involved with counting by 10s. Use a piece of sidewalk chalk to write the multiples of 10 on concrete. One child at a time stands on the number 10, says the number aloud, jumps onto the number 20 and says the number aloud. She continues to jump onto each of the numbers, saying each of the numbers aloud after she lands on them. This activity, like the ball toss, promotes not only math skills, but also motor skills and the importance of exercise.
Children count the multiples of 10 on a hundredths chart. Provide each child with a printout of a hundredths chart. Instruct them to use a crayon to color in all of the numbers that end with a zero -- 10, 20, 30, 40 and so forth -- until they reach 100. After coloring in the multiples of 10, have children look at their hundredths chart and say aloud each of the numbers that they have colored in. The chart provides children with a visual representation of the multiples of 10.