Less Challenging

• Subtract within 100 taking from the 10

More Challenging

• Add 3-digit numbers in the 90s

• Sub 3-digit #s ending in 99, 98, & 95

About This Sprint

Students should be comfortable with the following strategies before taking this Sprint:

• Add 100, subtract 1, e.g.

278 + 99 is 278 + 100 - 1

• Add 100, subtract 2, e.g.

547 + 98 is 547 + 100 - 2

• Add 100, subtract 5, e.g.

726 + 95 is 726 + 100 - 5