Level 1
Fill in the blank.
1310 - 25 = _____
1 m
Level 1
Fill in the blank.
1110 - 35 = _____
1 m
Level 1
Fill in the blank.
3910 - 115 = _____
1 m
Level 1
Fill in the blank.
434 - 215 = _____
1 m
Level 1
Fill in the blank.
734 - 415 = _____
1 m
Level 1
Fill in the blank.
5112 - 313 = _____
1 m
Level 1
6910 + 335 =
1 m
Level 1
6310 - 345 =
1 m
Level 1
Find the following values without a calculator.

Simplify your answers.
  1. 35 + 15 = _____
  2. 310 + 510 = _____
  3. 45 + 110 = _____
  4. 13 + 16 = _____
2 m
Level 1
What must be added to 4512 to make 513?
1 m