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Math · Numbers and place value

Tens Builder: Place value to 100

At a building site, kids build numbers with tens rods and ones cubes, then read numbers the blocks show. It starts with numbers to 20 and goes to 100. A miss labels the blocks and says to count the tens first, then the ones.

  • Grades1st grade, 2nd grade
  • Levels3, from “Tens to 20” to “Tens to 100”
  • A roundAbout 10 questions, a few minutes
  • PriceWith any plan, from $7.99 a month
Try it free for 7 daysSee plans and prices
A round of Tens Builder on a phone

How Tens Builder works

The 3 levels

  1. Tens to 20
  2. Tens to 50
  3. Tens to 100

What it lines up with in school

Common Core State Standards for Mathematics. Standards vary by state, so check with your kid’s teacher.

K.NBT.A.1
Build numbers from 11 to 19 as ten ones and some more ones.
1.NBT.B.2
Understand two-digit numbers as tens and ones.

Practice it at home

Questions about Tens Builder

What grade is Tens Builder for?
1st and 2nd grade. It’s a place value game with 3 levels that move up when your kid is ready.
Which standards does Tens Builder cover?
It lines up with Common Core math K.NBT.A.1 and 1.NBT.B.2. Standards vary by state, so check with your kid’s teacher for the exact match.
Does my kid need to read to play Tens Builder?
Tens Builder doesn’t read its questions aloud yet. Questions are short and built on pictures and numbers, so most kids in 1st and 2nd grade can play on their own.
How long is a round of Tens Builder?
About 10 questions, a few minutes. Nine right on the first try and the next round is a level harder; a tough round steps back one.
Is Tens Builder free?
It comes with every plan, from $7.99 a month, with a 7-day free trial. Number Garden and Gator Compare are free.

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