Number sense Problems Help !!!!?
1. If 40 more than some number is six times that number, the number must be=_______.
2. The number of numbers exactly divisible by 3 from 1 to 100 is=_______
3. How many different four-digit numbers can you make using the digits 2, 4, and 6? ______(non-repeating)
4. Randy pays $250, $150, and $100 every month for loans; he pays $_____ for the three loans in one year.
5. If 1.08 x 0.4 = 0.432, 1.08 x 4 = 4.32, and 1.08 x 40 = 43.2, then 1.08 x 400 =______
6. Estimate 2.1 x 430.6
7. Find the next number in the sequence:
3, 5, 9, 15, 23,...
8. How many minutes in one year?
Comments
1. If 40 more than some number is
six times that number, the number must be=_8.
40+8=6*8
2. The number of numbers exactly divisible by 3
from 1 to 100 is=33
3. How many different four-digit numbers can
you make using the digits 2, 4, and 6?
none(non-repeating)
4. Randy pays $250, $150, and $100 every month for loans;
he pays $6000 for the three loans in one year.
5. If 1.08 x 0.4 = 0.432, 1.08 x 4 = 4.32, and 1.08 x 40 = 43.2,
then 1.08 x 400 =432
6. Estimate 2.1 x 430.6=904.26
7. Find the next number in the sequence:
3, 5, 9, 15, 23,...33
8. How many minutes in one year?
525,600
1.
40+x = 6x
40 = 5x move x to one side by subtraction
x = 8
2.
x = 99/ 3 (100 is not divisible by 3)
x = 33
3.
none
4.
250 + 150 + 100 = 500
500 x 12 = 6000 (12 months in a year)
5.
1.08 x 400 = 432
6. About 862
7.
33
8.
525,600
527,040 (leap year)
1.) n+40 = 6n
40 = 5n
n = 8
2.) There are 33 numbers divisible by 3 between 1 and 100.
3.) As there are only digits and none can repeat, there are 0 four-digit numbers that can be made from 2, 4, and 6.
4.) ($250 + $150 + $100) = $450 per month
$450 per month = 12($450) per year = $5400 per year
5.) 432
6.) 2*430 = 860
7.) The pattern is +2, +4, +6... The next number is 23+10, or 33.
8.) 24 hours per day * 60 minutes per hour = 1440 minutes per day
365 days per year * 1440 minutes per day = 525,600 minutes per year
1. x+40 = 6x
5x = 40
x = 8
2. 33?
4.500 x 12 = 6000 foil it
5. 432
6.2*431 = 862
7. 33
8. 60*24*365=525 600
1. 8
2. 33
4. 6000
5. 432
6. 904.26
7. 33
8. 524160