All the coins in an organic cotton drawstring bag for storage. All the answer coins (120 coins) multiply up to 15x15 Made of solid hardwood maple and the coins are printed with nontoxic ink. Voila!!! Those are the prime numbers! Now your little one has a way to "see" and understand the "why" behind prime and composite numbers. For example 2 times table, 1x=2 (ignore 1x), 2x=4 (place the ball on the 4), 3x =6 (place the ball on the 6).Do this for 3 times, 4 times.10 times table. For every multiple (other than 1x) you get place a ball in the relevant slot in the 100. Here is a fun exercise for those of you have our hundred board as well. Either practice addition, subtraction, multiplication or division table from your memory and place the relevant couns on the perimeter or use the 100 board and do skip counting to learn the times table. Choose on of the bigger coins and keep that in the middle. The coins alone are so much fun to play with.Īrrange them by ascending or descending order ![]() This wooden arithmetic wheel is a great addition to your math shelf. 8 Multiply the number in the tens place of the bottom number by the number in hundreds place of the top number. ![]() Write the 6 on the line, and carry the 1 over above the 7. This multiplication wheel is very similar to our original one, except it goes up to 15x15 This makes 15, but you must add on the carried 1, so it equals 16.
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