What is 10 less than a number 20
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Mentally Find 10 More or 10 Less than 2-digit number without Counting
Name
Grade
School
Date
Questions10
Score
1
2
What is 10 more than a number 86
3
What is 10 more than a number 82
4
What is 10 less than a number 41
5
What is 10 less than a number 63
6
What is 10 more than a number 70
7
What is 10 more than a number 63
8
What is 10 less than a number 61
9
What is 10 more than a number 79
10
What is 10 less than a number 29
Answers Key
1
What is 10 less than a number 20
20 - 10 = 10
2
What is 10 more than a number 86
86 + 10 = 96
3
What is 10 more than a number 82
82 + 10 = 92
4
What is 10 less than a number 41
41 - 10 = 31
5
What is 10 less than a number 63
63 - 10 = 53
6
What is 10 more than a number 70
70 + 10 = 80
7
What is 10 more than a number 63
63 + 10 = 73
8
What is 10 less than a number 61
61 - 10 = 51
9
What is 10 more than a number 79
79 + 10 = 89
10
What is 10 less than a number 29
29 - 10 = 19
Mentally find 10 more or 10 less than a 2-digit Number Worksheet
The CCSS.MATH.1.NBT.C.5 worksheets with answers for 1st grade students to practice problems on Mentally find 10 more or 10 less than a given two-digit number without having to count by ones and explain the reasoning used is available online for free in printable and downloadable (pdf & image) format. For more questions and answers on 1.NBT.C.5 math activities, tap on generate new worksheet to learn, practice, test and verify math skills under the common core cluster (1NBTC) Use place value understanding and properties of operations to add and subtract in domain number and operations in base ten.
How to Use this Worksheet
Objective:
To practice these math problems of 1.NBT.C.5 worksheets, students are required to mentally find 10 more or 10 less than a given two-digit number without having to count by ones and explain the reasoning used. Users can directly refer the answer key to verify the work with steps for the corresponding practice problems given in the 1.NBT.C.5 activities under common core state standards for 1st grade mathematics.
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