One more than 139
140
One more than 1599
1600
One more than 703, 998
703,999
Which decimal is the biggest?
.7, .062, .540
.7
One less than 900
899
One less than 8000
7999
One less than 405, 000
5,000 minus one is 4,999.
So 405,000 - 1 is 404,999
Which decimal is the smallest?
3.5, 3.67, 3.09
3.09
Write the fraction for this.
3/8
Write the improper fraction for 1 2/3
5/3
Write these in order of size, smallest to biggest.
2/3, .5, 1/5
1/5, .5, 2/3
What fraction is the same as 4/5?
2/10, 2/3, 8/10
Write the fraction for six thirds
6/3
Order these fractions by size, biggest to smallest
5/5, 1/5, 2/5
If the denominator is the same, that means the numerator tells how large or small the fraction is.
1/5 is one slice of a 5 slice pizza.
4/5 is 4 slices of a 5 slice pizza.
Write 3 5/8 as a fraction
29/8.
There are 24 eighths in 3 wholes (3 X 8 = 24). There are 5 left over eights, so 24 + 5 is 29. The answer is 29/8
Which fraction is the smallest?
4/5, 2/10, 6/8
2/10
How many tens are in the number 99
9
How many tens are in all of the number 875
We can ignore the ones place. . So 875 has 87 tens in it!
How many hundreds are in all of the number 16,400
There are 164 hundreds in 16,400.
We can ignore the tens and ones since we want to know how many hundreds there are.
10,000 + 6,000 + 400.
There are 100 hundreds in 10,000
There are 60 hundreds in 6,000.
There are 4 hundreds in 400.
So 100 + 60 + 4 is 164!
Round this decimal to the nearest hundreth. 3.67
3.68
What is the number for 17 groups of ten?
170
What is the number for 312 groups of ten.
312 groups of ten is the same as 312 X 10. Any number times ten just adds a zero to change the place value.
So 312 x 10 is 3120.
How many tenths are in 5.2
There are 52 tenths in 5.2. We can move the decimal one place to the left to make the one into tenths.
How many thousands are in all of the number 703,299
There are 703 thousands. We can ignore the ones, tens and hundreds.
9+14
23- partition 14 into 10 and 4
What is 9 + 17?
26.
Partition, or use 9 + 20 and subtract 3!
17-9
know by heart or use doubles facts
9 + 9 is 18, so 9 + 8 is 17, and 17 - 9 is 8
49 divided by 7
7
one fourth of 32 is...
4. A fraction of any whole number is a division problem. So 1/4 of 32 is the same as 32 divided by 4.
One half of 18 is the same as 18/2.
One tenth of 70 is the same as 70 divided by 10.
What is 6x5
Use a known fact if you don't know this by heart.
What is 8x6
know by heart or use known facts.
8x5 is 40, so one more group of 8 is 48. 8X6 is 48
What number divided by 7 gives 9.
Division is the opposite of multiplication, so 7 times 9 is 63, and 63 divided by 9 gives 7.