Videos and songs to help Grade 1 kids learn how when given a
two-digit number, mentally find 10 more or 10 less than the number,
without having to count; explain the reasoning used.
Common Core: 1.NBT.5
Suggested Learning Target
- I can mentally find 10 more for any two-digit number (e.g., 32
+ 10 = 42)
- I can mentally find 10 less for any two-digit number (e.g., 32
- 10 = 22)
- I can explain why the tens digit increase or decreases by 1
when 10 is added or subtracted.
- I can use base ten manipulatives, number lines or hundreds
charts to model finding 10 more and explain reasoning
- I know the addition and subtraction fact families
- I know how to model addition using base ten manipulatives
(e.g., base ten blocks, Digi-Blocks, Unifix cubes) and explain
- I know how to skip count by 10
Lessons for Grade 1
Common Core for
Adding 10 To A Number
Adding 10 to a number using repeated examples.
86 + 10, 33 + 10, 62 + 10 ...
1 More/Less and 10 More/Less with 100 Chart
With the use of a hundred chart, identify one more than, one less
than, 10 more than, and 10 less than a given number.
Counting Collections to 100
Grades K-2 / Math / Addition
CCSS: Math.1.NBT.C.4 Math.1.NBT.C.5
Count and add within 100
Ten More Ten Less from the number chart
Encourage students to look for and discuss patterns on their
personal copy of the hundreds chart . Guide the students to realize
the vertical plus ten and minus ten patterns.
10 more than and 10 less than move back and forth
1 more than and 1 less than move side to side.
Math: Ten More Than a Number
Watch a teacher teach a small group of students how to count on 10
more than a number.
10 more and 10 less
Learning how to count by 10.
Adding and subtracting by changing the numbers in the tens column.
How do I help my child with 10 more and 10 less?
Working on fluency of 10 more and 10 less with Happy Counting.
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