Look for two numbers that make 10 or a double, and add those first. Then add the third number. Any order gives the same total.
addput together to find how many
sumthe answer when you add
make tenfind two numbers that add to 10
totalhow many in all
Watch for: Adding only two of the three numbers. Losing track of which numbers are already added. Counting all three from 1 instead of starting from a sum they know.
At home: Roll three dice and add them. Ask which two your child added first, and why that pair was easy.
Sample sheet and answer key
Freddie's Frog Pond
Grade 1 · Adding three numbers · 1.OA.A.2
NameDate
Freddie the frog lives in a busy pond full of bugs, lily pads and friends. Solve each problem to help Freddie out!
Find the ten
Add the two that make 10 first.
5 + 5 + 3 =6 + 4 + 2 =7 + 3 + 4 =
Riddle time
Solve each one, then use the code to answer the riddle.
Freddie has 5 water bugs, Moss has 9, and Fern has 2. How many water bugs do the three friends have in all?
5 + 9 + 2 = 16
16water bugs
Answer key
New problems every time, three levels (gentle, core and stretch), themes to pick from, a second page if you want one. Each sheet comes with an answer key and a one-page guide for grown-ups.
