Examples of Base Ten Blocks for numbers 10-99 with solutions

📚 Quick Study Guide

• 🔢 Base ten blocks are used to represent numbers using units (ones), longs (tens), flats (hundreds), and cubes (thousands).
• 🧱 A 'unit' is a single cube representing the number 1.
• 📏 A 'long' is a rod made of 10 units, representing the number 10.
• ➕ To represent a number between 10 and 99, you'll use a combination of longs (tens) and units (ones).
• 🧮 For example, the number 23 is represented by 2 longs (20) and 3 units (3).
• 📝 The value of a number represented by base ten blocks is the sum of the values of the longs and units.

Practice Quiz

1. Which base ten blocks represent the number 47?

   1. 4 longs and 3 units
   2. 3 longs and 7 units
   3. 4 longs and 7 units
   4. 7 longs and 4 units

2. What number is represented by 6 longs and 2 units?

   1. 26
   2. 62
   3. 8
   4. 12

3. If you have 5 longs, how many more units do you need to make the number 58?

   1. 5
   2. 3
   3. 8
   4. 13

4. How many longs are needed to represent the number 90?

   1. 10
   2. 9
   3. 0
   4. 1

5. What number is represented by 3 longs and 9 units?

   1. 93
   2. 39
   3. 12
   4. 27

6. Which base ten blocks represent the number 81?

   1. 1 long and 8 units
   2. 8 longs and 0 units
   3. 8 longs and 1 unit
   4. 9 units

7. If you have the number 35 represented with base ten blocks, how many longs and units do you have?

   1. 5 longs and 3 units
   2. 3 longs and 1 unit
   3. 3 longs and 5 units
   4. 8 longs and 0 units