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Fluently add within 5

Students will add two numbers with sums up to 5 quickly and accurately, working toward automaticity. They will move from using objects and fingers to recalling facts with ease.

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Fluently add within 5

Kindergarten · Fluency Within 5 · question 1 of 3

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12 rungs. A star at the top.

0 + 4 =

How it is taught

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Facts within 5 should be instant.

Count on from the bigger addend.

Read it: Adding by counting on

You have 3 crackers. Your brother gives you 2 more. You could count them all again from 1 — but you already know the plate is 3.

  1. Say the number you already know: 3.
  2. Count on, 1 number for each new cracker: 4, 5.
  3. The last number you say is the total: 3 + 2 = 5.

Counting all from 1 works, but it is slow, and it gets slower as the numbers grow.

Counting on starts from a number you already trust, so there is less to count and less to lose track of.

Start from the bigger number. 2 + 3 is quicker as 3, 4, 5 than as 2, 3, 4, 5.

To add, start at the bigger number and count on the other one.

Saying the starting number as the first count: 3, 4 for 3 + 2, and answering 4.

The starting number is what you already have. The counting begins with the first NEW cracker: 4.

1 + 1 = ___ — 2. 1 plus 1 is 2.

2 + 3

Let's add small numbers — fast! Two ducks are swimming. Three more ducks splash in.

First, here are two ducks.

Then three more ducks join them.

Let's count them all: one, two, three, four, five!

2 ducks + 3 more ducks2+3123452+3=5051234start+35ANSWER5ducks total
Kindergarten · Adding small numbers in a snap

We can write this as two plus three.

Here's another way to see it. Start at two on the number line.

Now hop forward three times: three, four, five.

We land on five! So two plus three equals five.

Soon, when you see two plus three, you'll just know — five! That's fluency.

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

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.

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