What Do You Remember?(7th Day 2)

Sum It All Up

100

20+(-7)=?

13

200

-15+6=?

-9

300

-9-22=?

-31

400

18.4-(-3.2)=?

21.6

500

-5.6+(-30.7)=?

-36.3

Products or Quotients Are A-OK

100

11(-8)=?

-88

200

-15(-2)=?

30

300

63÷(-9)=?

-7

400

-43(-6)=?

258

500

156÷(-12)=?

-13

Order Matters

100

7 + 10 × 5 + 10

67

200

20 ÷ (4 − (10 − 8))

10

300

45/(8(5 − 4) − 3)

9

400

4 × 5 + (14 + 8) - 36 ÷ 9

38

500

(12 ÷ 3 ) + 3 + ( 16 - 7 ) × 4

43

Basic Algebra (+-)

100

-4=x+3

x=-7

200

-3.2+x=8

x=11.2

300

-60+x=30

x=90

400

x-5.1=15

x=20.1

500

x-23=-36

x=-13

Basic Algebra (x÷)

100

4x=44

x=11

200

-5x=65

x=-13

300

-9x=981

-109

400

x/3=-20

x=-60

500

x/43=-2

x=-86