Within 20 (make ten, doubles, fact families) Knowledge-Based Download PDF

Questions

1. 1.

   How many different addition and subtraction equations are in the fact family for the numbers 8, 8, and 16?

   • A) 1
   • B) 2
   • C) 3
   • D) 4
2. 2.

   Which pair of equations shows how to use the make-ten strategy to solve $15 - 8$?

   • A) $15 - 5 = 10$ and $10 - 3 = 7$
   • B) $15 - 4 = 11$ and $11 - 4 = 7$
   • C) $15 - 6 = 9$ and $9 - 2 = 7$
   • D) $15 - 2 = 13$ and $13 - 6 = 7$
3. 3.

   Which number sentence shows how to use a doubles fact to find the sum $8 + 9$?

   • A) $8 + 8 + 2 = 18$
   • B) $9 + 9 + 1 = 19$
   • C) $8 + 10 - 1 = 17$
   • D) $8 + 8 + 1 = 17$
4. 4.

   Which number sentence belongs to the same fact family as $7 + 6 = 13$?

   • A) $7 + 7 = 14$
   • B) $13 + 6 = 19$
   • C) $7 - 6 = 1$
   • D) $13 - 6 = 7$
5. 5.

   Which number sentence shows how to use the make-ten strategy to solve $9 + 6$?

   • A) $9 + 1 + 5 = 10 + 5 = 15$
   • B) $9 + 2 + 4 = 11 + 4 = 15$
   • C) $9 + 6 + 1 = 15 + 1 = 16$
   • D) $10 + 6 - 1 = 16 - 1 = 15$