try out math grade 4

Find the factorization of 18.

Answer explanation

Make an factor tree.

18 is 2 times 9.

9 is 3 times 3.

So, the factorization of 18 is 2 x 3 x 3 or 2 x 3^2

Find the lowest common multiple (LCM) of 12 and 20.

Answer explanation

you can also use tree factor.

LCM= multiply all the factor of the two numbers

Find the Highest Common Factor (HCF) of 36 and 54.

Answer explanation

you can also use tree factor.

HCF = multiply only the same factor of the two number

Sean has 24 chocolate cupcakes and 36 strawberry cupcakes. He wants to pack them equally in the box. What is the biggest possible number of box needed?

Answer explanation

if there are "share equally" or pack equally" words, it is an HCF question.

HCF = multiply only the same factor

Damar went to swimming pool every 3 days. Naufal went to swimming pool every 5 days. If today, May 12, 2023 Naufal and Damar went to swimming pool together, when will they go to the swimming pool together again?

Answer explanation

if there is "every ...." and "together again" words, it means that it is a LCM question.

3 x 5 = 15

so, Damar and Naufal need 15 days to go together.

if they went together in May 12, 2023,

12 + 15 = 27

so, Damar an Naufal will go again in May 27, 2023.

Answer explanation

you can multiply the fraction with 100 or change the denominator of the fraction into 100.

The name of the angle is ....

Find the measure of angle x.

Answer explanation

a stright line = 180

so,

x = 180 - 100 = 80

Find the measure of angle x.

Answer explanation

a stright line = 180

so,

x = 180 - 100 - 30 = 50

Find the measure of angle x.

Answer explanation

the angle of triangle = 180

so,

x = 180 - 70 - 60 = 50