Students compute the total of an array with rows of 4 by adding 4 repeatedly (e.g., 4 + 4 + 4 for 3 rows of 4).
Real questions from this skill, graded here. No account, and nothing is saved.
Grade 2 · Rectangular Arrays and Repeated Addition · question 1 of 3
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12 rungs. A star at the top.
Esme puts shells in 2 buckets at the beach. Each bucket has 4 shells. How many shells in all?
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Repeated addition of 4s means adding 4 again and again.
Each jump on the line is 4.
3 trays sit in a row, 3 apples on each. You could count every apple from 1 — or skip-count the trays: 3, 6, 9.
Counting every apple from 1 works, but it is slow, and a skipped apple throws the whole count off.
Each tray holds the same 3 apples, so you only need that 3 again, not a new count.
3, 6, 9 are running totals — the last one is how many apples you have.
When every tray is the same, skip-count the trays, not the apples.
Adding the first 2 trays: 3, 6, and answering 6, forgetting the last tray.
There are 3 trays. Keep skip-counting until the last tray: 3, 6, 9.
2 trays, with 4 apples on each. Add the 4s: how many apples? — 8. 2 trays with 4 apples in each: skip-count the trays — 4, 8.
Let's count cookies! Here are three rows, and each row has four cookies.
Instead of counting one by one, we can use repeated addition.
The first row has four cookies. So we start with four.
The second row has four more. We add another four.
The third row has four more too. We add four again.
Now let's add. Four plus four equals eight.
Then eight plus four equals twelve.
Three rows of four is twelve. Repeated addition with fours — nice work!
While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.
A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.
An example student.
Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.
An example week.
14 days of every skill, practice packets, Fluency sheets and up to four students. No card.