Base Ten Blocks Themed Math Worksheets | Aged 4-6 Base 10 Blocks are used to introduce some mathematical concepts such as place value, number sense, addition and subtraction easily. These are mathematical manipulative that allows the learners to express numbers and patterns using the blocks. Summary Represent the numbers below using base 10 blocks. 5 tens + 8 ones = 58 7 tens + 6 ones = 76