Ten More and Ten Less Worksheet
This ten more and ten less worksheet gives 1st Grade students eight number-chart problems and two story problems for mental math with tens. An answer key is included, so checking work takes seconds.
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About this resource
Description
Finding ten more and ten less than a number is one of the first big place value ideas a first grader meets. Once students see that the tens digit is the only digit that changes when they add or subtract ten, mental math gets much faster. This ten more and ten less worksheet gives students focused practice with two-digit numbers so the pattern becomes automatic instead of something they count out one by one. It is built directly on the first grade standard that asks students to mentally find 10 more or 10 less than a given number, without having to count.
The worksheet opens with a Ten Less, Number, Ten More chart. Four two-digit numbers are printed down the middle column, and students fill in the number that is ten less on the left and ten more on the right. That gives eight quick responses and builds the pattern from both directions. Two story problems follow, so students carry the same skill into a real situation and decide whether to add ten or take ten away. This 10 more and 10 less worksheet works well as morning work, a math center, homework, or a quick check before a place value unit test.
What’s Included
- 1 print-ready PDF worksheet
- Answer key
- A four-row ten less and ten more number chart plus two story problems
There are three reasons this resource helps students learn the skill. First, the chart puts ten less and ten more side by side, so students see that the two moves are opposites rather than learning them as two separate tricks. Second, every number on the page is a two-digit number in the same range, so nothing in the layout hints at an answer and students have to think each one through. Third, the story problems ask students to apply the pattern, which is where mental math with tens actually pays off. Working through this ten more and ten less worksheet builds accuracy and speed at the same time.
Teachers and parents can keep the practice going away from the page. Count by tens out loud starting from a number that is not a multiple of ten, such as 23, 33, 43, and let students hear the pattern. Use a hundred chart and have students move one square up for ten less and one square down for ten more. Bundle craft sticks into groups of ten and add or take away a bundle. Play a quick partner game where one student says a number and the other answers with ten more, then ten less.
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