Level 1
Find the value of 1 unit.
  1. 5 u + 8 = 1 u + 20
  2. 1 u + 20 = 5 u + 8
  3. 5 u - 20 = 1 u + 4
  4. 1 u + 4 = 5 u - 20
4 m
Level 1
Find the following values without a calculator.
Choose the greatest number.
  1. 23, 63, 43
  2. 123, 213, 312
  3. 443, 344, 343
2 m
Level 1
Find the following values without a calculator.
  1. 15 + 20 = _____
  2. 22 + 23 = _____
  3. 26 + 24 = _____
2 m
Level 1
Find the following values without a calculator.
In 43852,
  1. the digit 4 stands for _____.
  2. the digit 3 stands for _____.
  3. the digit 8 stands for _____.
  4. the digit 5 stands for _____.
1 m
Level 1
Find the following values without a calculator.
  1. 23 x 2 = _____
  2. 312 x 3 = _____
  3. 1142 x 2 = _____
  4. 12421 x 2 = _____
1 m