2-min Fluency Warm-up — 10 plus a number is easy!
10 + 3 =
10 + 6 =
10 + 8 =
10 + 5 =
Make a 10 first! Break apart the second number: give some to make 10, then add the rest.
9 + 4 =
9 + = 10, 10 + =
8 + 6 =
8 + = 10, 10 + =
9 + 7 =
9 + = 10, 10 + =
8 + 5 =
8 + = 10, 10 + =
Estimate First! BEFORE solving, circle: is the sum MORE or LESS than 10? Then solve.
7 + 6
more than 10 / less than 10
Actual:
4 + 3
more than 10 / less than 10
Actual:
8 + 9
more than 10 / less than 10
Actual:
5 + 4
more than 10 / less than 10
Actual:
Find the missing number. Think: what goes with this part to make the whole?
+ 6 = 15
+ 7 = 13
+ 9 = 17
+ 6 = 14
Write each step of the make-10 strategy.
7 + 8
7 + 3 =
10 + 5 =
Answer:
9 + 6
9 + 1 =
10 + 5 =
Answer: