Elementary Math Adding Subtract Multiply

What is an example of expanded form:

• 200+70+9

• 279

• two hundred seventy-nine

• 2 hundred 7 seventy 9

Jimmy baked 30 cupcakes. His mom said, "That is too many cupcakes for you to eat!" So she took away 10. How many cupcakes does Jimmy have left?

• 40

• 3

• 20

• 50

Spongebob had 50 Crabby Patties and Squidward had 1,000 Crabby Patties. How many Crabby Patties do they BOTH have?

• 6

• 7

• 12

• 27

• -7

• -3

• -2

• -10

• 15

• 7

• 44

• 16

• 5

• 3

• 12

• 18

Which of these is not a multiple of 3?

• 3

• 6

• 9

• 20

Reorder the following steps to find the LCD when adding 2 fractions that have unlike denominators.

• Find the LCM

• Write the multiplication sentences for the LCM.

• Multiply the numerator & denominator by the same factor.

• Write 2 new fractions that have the same denominator.

When adding or subtracting fractions, the numerators must be the same before you can solve the problem.

• True

• False