Arithmetic Patterns

Answer Key - Grade 3 Math Worksheet

Circle the answer, or write the answer on the line.

1. 1.

   On a hundred chart, which numbers are in the same column as 23?

   • 22, 24, 25
   • 13, 33, 43
   • 32, 42, 52
   • 20, 30, 40
2. 2.

   Which pattern shows products of 6?

   • 6, 7, 8, 9
   • 6, 12, 18, 24
   • 6, 10, 14, 18
   • 12, 14, 16, 18
3. 3.

   In an addition table, what is true about the sums 1 + 9, 2 + 8 and 3 + 7?

   • they are all odd
   • they go up by 1
   • they are all 10
   • they go up by 2
4. 4.

   Each product in the 6s row is double a product in the 3s row. 3 × 7 = 21. What is 6 × 7?

   42
5. 5.

   Every product in the 5s row ends in 0 or 5. Which number is in the 5s row?

   • 42
   • 54
   • 44
   • 45
6. 6.

   Which number goes in the empty box?

   • 32
   • 36
   • 42
   • 35
7. 7.

   These are products from the 9s row. Add the two digits of each number. What do you notice?

   • the digits always add to 8
   • the digits always add to 10
   • the digits always add to 9
   • the digit sums go up by 1
8. 8.

   Why is 4 times any number always even?

   • the product is always more than 10
   • the other factor is always even
   • it always ends in 4
   • it can always be split into two equal groups
9. 9.

   These numbers are from the 4s row of the multiplication table. What is true about them?

   • some are even and some are odd
   • they are all even
   • they all end in 4
   • they are all odd
10. 10.

    Look at 45, 54, 63 and 72 from the 9s row. How do the digits change?

    • tens stay the same, ones go down 1
    • tens go down 1, ones go up 1
    • tens go up 1, ones go up 1
    • tens go up 1, ones go down 1