Place a decimal point in each sum without
calculating. Show your thinking.
631.5 + 902.4 + 217.83 = 175173
Place a decimal point in each sum without
calculating. Show your thinking.
631.5 + 902.4 + 217.83 = 175173
600 + 900 + 200 = 1700
The answer is 1751.73
Place a decimal point in each sum without
calculating. Show your thinking.
587.25 + 22.5 + 117.98 = 72773
Place a decimal point in each sum without
calculating. Show your thinking.
587.25 + 22.5 + 117.98 = 72773
600 + 20 + 100 = 720
The answer is 727.73
Place a decimal point in each answer
without calculating. Show your thinking.
4.831 + 2.765 = 7596
Place a decimal point in each answer
without calculating. Show your thinking.
4.831 + 2.765 = 7596
5 + 3 = 8
The answer is 7.596
Mechanical pencil leads have widths of
0.3mm, 0.5mm, 0.7mm and 0.9mm. How could
you lay four leads side by side In order to
make a total of exactly 2.0mm?
(cannot use 0.5 x 4)
Parcel A is heavier than parcel B by 3.4 kg.
Parcel C is lighter than parcel B by 1.25 kg.
How heavy is parcel A if parcel C is 5.5 kg?
Parcel A is heavier than parcel B by 3.4 kg.
Parcel C is lighter than parcel B by 1.25 kg.
How heavy is parcel A if parcel C is 5.5 kg?
Parcel A = 10.15kg
Parcel B = 6.75kg
Parcel C = 5.5kg
Estimate and then use a calculator to
determine each answer.
5.25 x 196 =
Estimate and then use a calculator to
determine each answer.
5.25 x 196 =
5 X 200 = 1000
Actual answer 1029
44 x 78 = 3432. Use this answer to find the
answer for the following:
a. 0.44 x 78 =
b. 4.4 x 7.8 =
c. 44 x 0.078 =
d. 0.44 x 0.078 =
e. 440 x 780 =
44 x 78 = 3432. Use this answer to find the
answer for the following:
a. 0.44 x 78 = 34.32
b. 4.4 x 7.8 = 34.32
c. 44 x 0.078 = 3.432
d. 0.44 x 0.078 = 0.03432
e. 440 x 780 = 343200
2.5 x 0.01 =
54.5 x .001 =
895.4 x .1 =
0.25 x .01 =
2.5 x 0.01 = 0.025
54.5 x .001 = 0.0545
895.4 x .1 = 89.54
0.25 x .01 = 0.0025
A mechanic charges $45/hour to fix a car.
If your car is in the shop for 7.5 hours and
the parts cost $255.45 how much will the
total bill be? Show your calculations.
A mechanic charges $45/hour to fix a car.
If your car is in the shop for 7.5 hours and
the parts cost $255.45 how much will the
total bill be? Show your calculations.
7.5 x 45 + 255.45 = $592.95
A box of 8 books weight 14.5kg. The packing and
the empty box weighs 3.2kg. How much does 1
book weigh? Show your calculations. Round to
two decimal places.
A box of 8 books weight 14.5kg. The packing and
the empty box weighs 3.2kg. How much does 1
book weigh? Show your calculations. Round to
two decimal places.
14.5 – 3.2 = 11.3kg
11.3 / 8 = 1.41kg
Each book weighs 1.41kg
How many sheets of paper will it take to
make a pile 3cm thick if each piece of paper
is 1.1mm thick? Hint, you need to convert.
How many sheets of paper will it take to
make a pile 3cm thick if each piece of paper
is 1.1mm thick? Hint, you need to convert.
30mm / 1.1mm = 27.27
You will need about 27 sheets of paper.
1 – 1 + 27 / 3 + 12 x 5 + 12
1 – 1 + 27 / 3 + 12 x 5 + 12
1 – 1 + 9 + 60 + 12
81
12 + 10 / 1 + 5 – 1 + 1 x 6
12 + 10 / 1 + 5 – 1 + 1 x 6
12 + 10 + 5 – 1 + 6
32
8 x 8 + 60 / 6 + 4 + 12 – 2
8 x 8 + 60 / 6 + 4 + 12 – 2
64 + 10 + 4 + 12 – 2
88
Add brackets to make each statement true.
7 + 30 x 0.5 = 18.5
Add brackets to make each statement true.
(7 + 30) x 0.5 = 18.5
Add brackets to make each statement true.
6 + 3 x 0.2 + 0.4 / 2 -1 = 2.2
Add brackets to make each statement true.
(6 + 3) x 0.2 + 0.4 / (2 -1) = 2.2
After a 2005 earthquake, 11410kg of rice was
distributed in 3260 bags to families in the
damaged area. How many kilograms of rice
were in each bag, if the bags were the same
size?
After a 2005 earthquake, 11410kg of rice was
distributed in 3260 bags to families in the
damaged area. How many kilograms of rice
were in each bag, if the bags were the same
size?
11410kg / 3260 = 3.5
After a 2005 earthquake, 11410kg of rice was
distributed in 3260 bags to families in the
damaged area. If a family used 0.25 kg per
day, how many days would 1 bag of rice
last? Remember each bag is 3.5 kg
After a 2005 earthquake, 11410kg of rice was
distributed in 3260 bags to families in the
damaged area. If a family used 0.25 kg per
day, how many days would 1 bag of rice
last? Remember each bag is 3.5 kg
3.5 / 0.25 = 14 days