Which of the following is equal to 45 km?
4,500,000 mm
450,000 cm
4,500 m
45,000 m
Which of the following is equal to 0.5 hours?
30 minutes
720 seconds
1,500 seconds
50 minutes
What property is "if 3g+4g = 12g-5g, then 12g-5g = 3g+4g"?
Symmetric property
Transitive property
Substitution property
Which of the following is not equal to 60k+30k?
40k×2
8,100k÷90
72k÷2+54k
45k+50k-5k
What property is "if 65-20 = 9×5, then (65-20)-12 = (9×5)-12"?
Symmetric property
Substitution property
Transitive property
Which of the following is not equal to 0.4 hours?
1,800 seconds
24 minutes
40 minutes
Which of the following is equal to 12 minutes?
720 seconds
120 seconds
0.12 hours
0.25 hours
What property is "if 2×12 = 8×3, then 2×12 = 48÷2"?
Symmetric property
Transitive property
Substitution property