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Grade 1 - Mathematics
6.3 Time, Money, and Estimating
Look at the number. If the last digit or the units digit is 5 or more than 5 we add 1 to the number in the tens place and make the units digit 0.
If the last digit or the units digit is less than 5 then make the units digit 0 and keep the tens digit as it is.
Which would be the best estimate for 108 + 32 = ?
Answer: 110 + 30
Answer the following questions. Also write at least ten examples of your own.
: Which would be the best estimate for 77 + 32= ?
80 + 30
80 + 40
70 + 40
: The first grade has 11 girls and 9 boys. Two girls were absent on Monday? How many children were present on Monday?
: The game started at 3. We are 15 minutes late. What time did we arrive.
: Which number shows less than $5 but more than $3?
: A shelf of the bookcase holds 8 books. It has 3 shelves. How many books will the bookcase hold?
: James got $7 from his Mom for his birthday and $5 from his grandmother. How much does he have?
$7 + $5 =
$7 x $5 =
: Which would be the best estimate for 109 + 38 = ?
: How often do you celebrate your birthday?
Once a year
Once a month
Once a week
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