Place value within 100 (4)

Add to make 10

Add 3-digit #s to 99, 98, & 95

Add 3-digit #s in the 90s

Use mental math to write the missing addend that will make 100.

Before taking this Sprint, students should be comfortable using one of the following strategies:

• Make the next ten, then make 100.

  For the problem 38 + ___ = 100:

  38 + 2 = 40

  40 + 60 = 100

  2 + 60 = 62

  38 + 62 = 100.

• Add tens & then ones.

  For the problem 27 + ___ = 100:

  27 + 70 = 97

  97 + 3 = 100

  70 + 3 = 73

  27 + 73 = 100.

• Subtract tens & then ones from 100.

  For the problem 19 + ___ = 100:

  100 – 10 = 90

  90 – 9 = 81

  100 – 81 = 19

  19 + 81 = 100

• Subtract ones & then tens from 100.

  For the problem 74 + ___ = 100:

  100 – 4 = 96

  96 – 70 = 26

  100 – 74 = 26

  74 + 26 = 100