1.
Tell which equation is an estimate for 56.2 × 6.
A.
50 × 6 = 300
B.
50 × 10 = 500
C.
56 × 6 = 336
D.
56 + 6 = 62
Hint
2.
Tell which equation is an estimate for 8 × 49.6.
A.
5 × 40 = 200
B.
8 + 50 = 58
C.
8 × 50 = 400
D.
80 × 50 = 4,000
Hint
3.
A book bag has six books. If each book weighs about 4.3 pounds, estimate the total weight of the books.
A.
about 10.3 lb
B.
about 643 lb
C.
about 240 lb
D.
about 24 lb
Hint
4.
About 890 cars drive on a street each day. About how many cars drive on the street in the month of January?
A.
about 310,250 cars
B.
about 8,500 cars
C.
about 881 cars
D.
about 27,000 cars
Hint
5.
A graphing calculator weighs 5.2 ounces. About how much do 12 graphing calculators weigh?
A.
about 17 oz
B.
about 60 oz
C.
about 5.212 oz
D.
about 125.2 oz
Hint