Place Value Power
1000+500+30+2 is written in expanded form.
Write 1000+500+30+2 as one number.
1,530
Which multiple of 10 is closer to 64: 60 or 70?
60
What is 90 − 30?
60
You see 4 ravens in a tree. Then 3 more land. How many ravens are there?
7 ravens
What is the NAME for the answer to
1. an addition problem?
2. a subtraction problem? and
3. a multiplication problem?
1. sum
2. difference
3. product
Imagine we were using base 10 blocks.
What number has 6 thousands, 2 hundreds, 0 tens, and 9 ones?
6,209
6 cubes, 2 flats, no rods, 9 units
Round 758 to the nearest 10.
760
What is 125 + 75?
200
You buy a notebook for $7.00 and pay with $10.00 How much change do you get?
$3.00
What word means to make a sensible, close guess about an amount?
estimate
I am a four-digit number. My thousands digit is 5. My hundreds digit is 3 more than my tens digit. My tens digit is 2, and my ones digit is 0. What am I?
5520
Round 2,495 to the nearest 10 and nearest 100.
10s: 2500
100s: 2500
Find the missing number: 35 + □ = 92.
57
92-35=57
35+57=92
A hiking trail is 850 metres long. You have walked 375 metres. How much farther is left?
475meters left.
What do we call writing a number as the sum of its place values, such as ...
3,000 + 200 + 40 + 5?
expanded form
A number has 48 hundreds and 12 ones. What is the number?
4,812
A student rounds 4,549 to 4,600 to the nearest 100. Is this correct?
no, the nearest 100 is 4500
A student says 7 × 16 = 7 × 10 + 7 × 6. What is the answer?
112
7*16=112
7*10=70
7*6= 42
70+42=112
A class needs 6 pieces of yarn for each of 24 students. How many pieces are needed?
144 pieces of yarn
6*24=144
What mathematical word means to break a number into smaller parts?
decompose
In 7,272, how many times greater is the value of the first 7 (in the thousands place) than the second 7 (in the tens place)?
100 times greater.
1. Find the place value of each 7 in 7,272:
2. Compare the two values using division:
I am thinking of a number... when rounded to the nearest 100 it is 4,300. when rounded to the nearest 10 it is 4,280
Give one possible number. There are multiple answers.
Any whole number from 4,275 to 4,284, such as
4,281
4,280
I am a number. Multiply me by 5 and then subtract 15. The answer is 85. What number am I?
20
1. 15+85 = 100
2. 100/5= 20
3. redo the math
4. 20*5=100
5. 100-15=85
A school has $500 for supplies. It buys 4 sets of markers at $35 each and 3 packs of paper at $25 each. How much money remains?
$285.00
What do we call a mathematical statement showing that two expressions have the same value?
Equation