Math Unit 2 Review Math Makes Sense 3/4 - when I call your group please choose your category and value. All groups should solve every problem and the first group to get their hands raised, and answer the question correctly will get the points!

Gr 3

100

Use mental math to find the sum

64+36

100

200

Add:

227+169=

396

300

What are 3 different ways to make $3 using coins?

Many answers! 

1 loonie + 1 toonie

or

3 loonies

or

12 quarters

or

10 quarters + 5 dimes

etc

400

Use the digits 2, 4, 6 to make 3 digit numbers. Use each digit only once per number.

Find ALL the possible combinations. 

642, 624

462, 426

264, 246

Gr 3

100

Use mental math to find the difference:

60-19=

41

200

Subtract:

400-177=

223

300

Ms. Bellmond made 325 cookies. Students ate 115 cookies, and then Ms. Bellmond made 85 more. How many cookies were there in the end?

295

400

Two numbers, when using front-end estimation, add to 300. What two numbers could they be? 

DAILY DOUBLE BONUS: When rounded to the NEAREST 100, assume these numbers also add to 400. What could these numbers be?

Many answers! examples: 120+260, 090+330

Bonus: example: 120+260

Gr 4

100

Use mental math to add:

1236+1234=

2470

200

Use mental math to find the difference:

3505-1606=

1899

300

Ms. Bellmond graded 330 tests on Monday, 334 tests on Tuesday, and 336 tests on Wednesday. How many tests did she grade in total? 

1000! 

400

Ms. Bellmond used 250 stickers on Wednesday, 225 on Thursday, and 432 on Friday. How many more stickers did she use on Friday than on Thursday?

207!

Gr 4

100

Use mental math to find the difference:

1400-705=

695

200

Write these numbers in order from greatest to least: 3852, 3528, 3582

3852, 3582, 3528

300

What is the largest 4-digit number you can make using the digits 8, 6, 5, and 2 once only?

8652

Eight thousand six hundred fifty two

400

In a contest, Spiderman popped 10 more balloons than Iron Man. In total, they both popped 90 balloons. How many balloons did each hero pop?

Spiderman popped 50 and Iron Man popped 40.

Half of 90 is 45. 

Half of 10 is 5. 

45+5 is 50 and 45-5 is 40. 40+50=90

Vocabulary Knowledge (3 AND 4)

100

Write "Seven thousand four hundred thirty two" in standard form

7432

200

Write 3456 in words

Three thousand four hundred fifty six

300

Write 2345 in expanded form

2000+300+40+5

400

What kind of question is it if you are trying to find the SUM?

DAILY DOUBLE BONUS: What kind of question is it if you are trying to find the DIFFERENCE?

Sum = Addition, plus

Difference = Subtraction, minus