1. round to the nearest hundred, and then subtract 4,623-3,892
a. 700
b. 600
c. 800
d. 750
2. use compatible numbers, and then divide 448 divided by 8
a. 450 ÷10 = 45
b.500÷10=50
c.500÷5=100
d. 450÷5=90
3. name the property of addition that the following equation shows 345+(452+254)= (345+452)+254
a. identity property
b. commutative property
c. associative property
d. none of the above

1. A. 731 >> 700

2. A. 450 ÷ 10 = 45 >> 56

3. C. Associative Property

Step-by-step explanation:

3. The Associative Property of Multiplication states that with the use of GROUPING SYMBOLS, no matter how you write your answer out\in-side them, you will ALWAYS get the exact same result.

2. Compatible Numbers are numbers that are easy to compute mentally, meaning that you have to physically figure out an estimate that this answer is closest to:

8 → 10

448 → 450

450 ÷ 10 = 45

448 ÷ 8 = 56

56 and 45 are close by 11, so this is the best answer.

1. 4623 - 3892 = 731 >> 700

731 rounds down to 700 because that "3" in the tens place value chart, tells the hundreds digit to start as is, and turn the rest to zeros. Always recall this:

Four or less, let it rest

Five or more, let it soar

I am joyous to assist you anytime.

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!