Captain 2 Math Battle

Multiplying

100

3xx149

What is 447?

200

15xx49

What is 735?

300

8xx56

What is 448?

400

64xx45

What is 2880?

500

17xx149

What is 2533?

Adding

100

3+8+5+5+2

What is 23?

200

23+51+9

What is 83?

300

285+127

What is 412?

400

1247+825

What is 2072?

500

11373+3202+425

What is 15000?

Subtracting

100

53-33

What is 20?

200

93-68

What is 25?

300

172-59

What is 113?

400

251-126

What is 125?

500

2583-795

1788

Name the +/- Strategy

100

38+39=40+40-3

What is Doubles/Near-Doubles?

200

139+43=140+40+2

What is Making Landmark/Friendly Numbers?

300

365+247=300+200+60+40+5+7

What is Breaking each Number into Its Place Value?

400

117+426=(117+400)+26

What is Adding up in Chunks?

500

99-73=(100-73)-1

What is Adjusting One Number to create and easier problem?

Name the x Strategy

100

16 xx 5=16+16+16+16+16

What is Repeated Addition or Skip Counting

200

26xx12=52xx6=104xx3

What is Doubling and Halving?

300

18 xx 35=(3xx6)xx(7xx5)

What is Breaking Factors into Smaller Factors?

400

4xx532=(4xx2)+(4xx30)+(4xx500)

What is Partial Products?

500

25xx199=(25xx200)-25

What is Making Landmark/Friendly Numbers?