2-min Fluency Warm-up — Skip count by 5s.
Count by 5s — fast like counting nickels!
Count by 5:
Count by 5:
An array puts things in neat rows (across ➡) and columns (down ⬇). We say "3 rows of 4."
rows of
Total dots:
rows of
Total dots:
rows of
Total dots:
rows of
Total dots:
Estimate First! Take a quick peek — do NOT count yet. Write your estimate, THEN count by rows to check.
My estimate:
Actual count:
Was your estimate close?
My estimate:
Actual count:
Was your estimate close?
Add each ROW to find the total. Example: 3 rows of 4 → 4 + 4 + 4 = 12.
Addition equation:
Total:
Addition equation:
Total:
Addition equation:
Total:
Addition equation:
Total:
Show Two Different Ways — Find the total for this array two ways: (1) add the rows, (2) add the columns.
Way 1 (rows): 4 + 4 + 4 =
Way 2 (columns): 3 + 3 + 3 + 3 =
What do you notice about the two answers?