| Estimations | Multiplication Standard Algorithm | Comparing Expressions | Metric Conversions | Surprise Category |
|---|---|---|---|---|
|
3,000 x 400 = 1,200,000
Round and estimate the product: 2,803 × 406
|
9,114
434 × 21
|
> greater than
Compare the following expression: 24 × (20 + 5) <, >, or = to (20 + 5) × 12
|
920 cm
Convert meters to centimeters.
9.2 m |
25
The difference between 4 twenty-fives and 3
twenty-fives |
|
50 x 8,000 = 400,000
Round and estimate the product: 54 x 7,549
|
43,554
1,281 x 34
|
< less than
18 × 27 is <, >, or = to 20 twenty-sevens minus 1 twenty-seven v
|
56 days
Convert weeks to days.
8 weeks |
264.040 km
The distance was 264,040 meters. Convert
the distance to kilometers |
|
1,000 x 40 = 40,000
Round and estimate the product: 982 x 40.21
|
1,451.26
487 x 2.98
|
= equal to
19 × 9 is <, >, or = to 3 nineteens, tripled
|
17.1 feet
Convert yards to feet.
5.7 yards |
66
The sum of 3 sixteens and 2 nines
|
|
22 x 800 = 17,600 or 20 x 800 = 16,000
Round and estimate the product: 21.78 x 832
|
40,507.74
7,419 x 5.46
|
> greater than
62 × (70 + 8) is <, >, or = to (70 + 8) × 26
|
1.578 km
Convert meters to kilometers.
1,578 m |
$2,375
General admission to The American Museum of Natural History is $19.
If a group of 125 students visits the museum, how much will the group’s tickets cost? |
|
90 x 10,000 = 900,000 or 89 x 10,000 = 890,000
Round and estimate the product: 89.1 x 9,940
|
4,704,295.2
9,764 x 481.8
|
> greater than
61 × 25 is <, >, or = to 60 twenty-fives minus 1 twenty-five
|
3.78 m
The length of the diving board is 378
centimeters. What is its length in meters? |
117.76 meters
Each costume needs 46 centimeters of red ribbon and 3 times as much yellow ribbon. What is the total
length of ribbon needed for 64 costumes? Express your answer in meters. |
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