Division
Multiplication
Multi-Step
Ruler of Rules
Word Problems
100
if n = 3, solve for: 9 ÷ n =
9 ÷ n means 9 ÷ 3 = 3; answer is 3 (do the two smaller #s multiplied together give us the large #?)
100
if n = 5, solve for: 6 x n =
6 x n means 6 x 5 = 30; 30 is the answer (does this make a fact family?)
100
if n = 3, solve for: (6 + n) x 3 =
we do what's in the parentheses first, so; (6 + n) means (6 + 3) which is 9, then (9) x 3 = 27 answer is 27
100
if we put IN 5, and get OUT 20; what is the rule?
our OUT is bigger, so we know the operation is multiplication: 5 times what gives us 20?! 5 times 4 gives us 20; so multiply by 4 is the rule
100
If Sr. Perez has 2 pieces of paper to put into 11 Friday folders; how many total pieces of paper must he print to fill all 11 folders?
11 folders receiving 2 papers each means multiplication; 11 x 2 = 22; he will need to print 22 total papers
200
if n = 6, solve for: n ÷ 2 =
n ÷ 2 means 6 ÷ 2 = 3; 3 is the answer (do the two smaller #s multiplied together give us the large #?)
200
if n = 6, solve for: n x 7 =
n x 7 means 6 x 7 = 42; 42 is the answer (does this make a fact family?)
200
if n = 5, solve for: (n - 3) + 11 =
we do what's in the parentheses first, so; (n - 3) means (5 - 3) which is 2, then (2) + 11 = 13 answer is 13
200
if we put IN 12, and get OUT 6; what is the rule?
our OUT is smaller, so we know our operation is divsion: 12 divided by what gives us 6, or what times 6 gives us 12? 2 times 6 gives us 12; so divide by 2 is the rule
200
Sr. Plum has 15 apple pies he wants to give his 5 brothers; how many pies will each friend get?
he has 15 pies he is divvying up amongst 5 people so our operation is division; 15 ÷ 5 = 3; each friend will get 3 pies
300
if n = 24, solve for: n ÷ 4 =
n ÷ 4 means 24 ÷ 4 = 6; 6 is the answer (do the two smaller #s multiplied together give us the large #?)
300
if n = 3, solve for: 8n =
8n means 8 x n, which means 8 x 3 = 24; 24 is the answer (does this make a fact family?)
300
if n = 8, solve for: (4 x n) - 7 =
we do what's in the parentheses first, so; (4 x n) means (4 x 8) which is 32, then (32) - 7 = 25 answer is 25
300
if we put IN 7, and get out 56; what is the rule?
our OUT is bigger, so our operation is multiplication: what times 7 gives us 56? 7 x 8 gives us 56; so multiply by 8 is the rule
300
Miss Nenninger is making a final exam for all of you, and wants to choose 6 problems from 7 chapters from math; how many problems will she choose all together?
we want a total for this one, so our operation is multiplication: 6 problems from 7 chapters, which means 6 x 7 = 42; Miss Nenninger will choose 42 total problems for your final exam ;)
400
if n = 8, solve for: 48 ÷ n =
48 ÷ n means 48 ÷ 8 = 6; 6 is the answer (do the two smaller #s multiplied together give us the large #?)
400
if n = 4, solve for: 7n =
7n means 7 x n, which means 7 x 4 = 28; 28 is the answer (does this make a fact family?)
400
if n = 36, solve for: (n ÷ 6) x 6 =
we do what's in the parentheses first, so; (n ÷ 6) means (36 ÷ 6) which is 6, then (6) x 6 = 36 answer is 36
400
if we put IN 49, and get OUT 7; what is the rule?
our OUT is smaller, so we know the operation is division: 49 divided by what gives us 7, or what times 7 gives us 49? I know that 7 times 7 gives us 49, so 49 divided by 7 gives us our OUT value; so divide by 7 is the rule
400
Miss Lepic has handed 6 students 4 pencils each; how many pencils did she start with before giving them all away?
it can be either operation: we know that she gave 6 people 4 pencils, which means 6 x 4 = 24; Miss Lepic handed out 24 pencils
500
if n = 7, solve for: 63 ÷ n =
63 ÷ n means 63 ÷ 7 = 9; 9 is the answer. (do the two smaller #s multiplied together give us the large #?)
500
if n = 8, solve for: n x n =
n x n means 8 x 8 = 64; 64 is the answer (does this make a fact family?)
500
if n = 7, solve for: (5n) + n =
we do what's in the parentheses first, so; (5n) means (5 x n) which means (5 x 7) which is 35, then (35) + n means (35) + 5 = 40 40 is the answer
500
what ever we put INto the IN value, our OUT always is 0; what could our rule be? (think back to multiplication rules you have learned...)
thinking about multiplying any number by 0, I know that my answer will ALWAYS be 0; so multiply by 0 is the rule
500
Mr. Creach wants to divide the class into 3 groups evenly, if there is 27 total students how many students will be in each of the 3 groups?
we are dividing a large number into groups: so we need to know what 27 divided by what will give us 3 even groups, or what times 3 will give us 27? we know that 3 times 9 will give us 27; Mr. Creach will have 9 students in each of the 3 groups
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