LCM and GCF
Factor Fun
Square Up
Prime and Composite
Wild Card
100

Find the GCF of 10 and 15.
求 10 和 15 的最大公约数。

What is 5?

100

The factors of 12.

12 的因数。

What are 1, 2, 3, 4, 6, 12?

100

Calculate the square root of 64.
计算 64 的平方根。  

What is 8?

100

This type of number has exactly two distinct factors: 1 and itself.
这种类型的数字恰好有两个不同的因数:1 和它本身。  

What is a prime number?

100

Round 5 683 to the nearest hundred.
将 5 683 四舍五入到最接近的百位数。

What is 5 700?

200

Find the LCM of 4 and 6.

求 4 和 6 的最小公倍数。

What is 12?

200

The factors of 25.

25 的因数。

What are 1, 5, 25?

200

Find a perfect square that falls between 100 and 150.
找到一个介于 100 和 150 之间的完全平方数  

What is 121 or 144?

200

Give an example of a composite number between 10 and 15.

举一个 10 到 15 之间的合数的例子。

 

What is 12 or 14 or 15?

200

Round 835.65 to the nearest hundredth.
将 835.65 四舍五入到最接近的百分位。

What is 835.65?

300

Determine the GCF of 36 and 48.
确定 36 和 48 的最大公约数。

What is 12?

300

The prime factors of 50.

50 的质因数。

What is 2, 5, 5?


300

The square root of 100

100 的平方根


What is 10?

300

Is 16 a prime or composite number?
16 是质数还是合数?

composite


300

State which decimal is bigger: 6 851.032 or 6 851.044

说出哪个小数更大:6 851.032 或 6 851.044

6 851.044

400

Two bells ring at the same time. One rings every 8 minutes, and the other rings every 12 minutes. How long until they ring together again?
两个钟同时响起。一个每8分钟响一次,另一个每12分钟响一次。它们多久会再次同时响起?

What is 24 minutes?

400

Prime factorization of 68.

68 的质因数分解。

What is 2 x 2 x 17

400

The side length of a square with an area of 49 square cm.
一个正方形的边长为49平方厘米,面积为。

What is 7cm?

400

The only even prime number.
唯一的偶质数。

What is 2?

400

Pencils come in packages of 10. Erasers come in packages of 12. Tristan wants to purchase the smallest number of pencils and erasers so that he will have exactly 1 eraser per pencil. How many packages of pencils and erasers should Tristan buy?

铅笔一包10支,橡皮一包12块。特里斯坦想购买最少数量的铅笔和橡皮,使得每支铅笔恰好有一块橡皮。特里斯坦应该买多少包铅笔和橡皮?

 

What is 12 packs of pencils and 10 packs of erasers?

500

Find the LCM of 3, 4 and 8.  

求 3、4 和 8 的最小公倍数。

What is 24?

500

The GCF of 24 and 36 using prime factorization.
使用质因数分解来计算 24 和 36 的最大公约数。

What is 2x2x3 = 12

500

How many squares with sides that are 2 centimetres long are needed to cover a square with a side length of 10 centimetres without overlapping?

需要多少个边长为 2 厘米的正方形才能覆盖边长为 10 厘米的正方形而不重叠?

 

25 squares.

500

State whether 51 is prime or composite. If it's composite, name one factor other than 1 and 51.

说明 51 是质数还是合数。如果是合数,请说出一个除 1 和 51 之外的因数。

 

What is 3 or 17?

500

Kiara baked 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her friends at school. She wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If she wants each container to have the greatest number of cookies possible, how many plastic containers does she need?
Kiara烤了30块燕麦饼干和48块巧克力曲奇,准备用塑料容器装好送给学校的朋友们。她想把饼干分装到相同的容器里,确保每个容器里每种饼干的数量都相同。如果她想让每个容器里装尽可能多的饼干,那么她需要多少个塑料容器呢?  

What is 6 containers?

30 – 1, 2, 3, 5, 6, 10, 15, 30 

48 – 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 GCF = 6 

Kiara needs 6 plastic containers for her cookies.

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