Identify the values of the digits in the number 86,423.
The digit 8 is worth 80,000.
The digit 6 is worth 6,000.
The digit 4 is worth 400.
The digit 2 is worth 20.
The digit 3 is worth 3.
410 + 310
720
442 - 320
122
Convert.
3 yards = ___ feet
(1 yard = 3 feet)
3 yards = 9 feet
Round 3,567 to the nearest hundred.
3,600
True or False: This is a right angle.

False
Identify the places of the digits 4, 5, and 8 in the number 538,492.
The 4 is in the hundreds place.
The 5 is in the hundred thousands place.
The 8 is in the thousands place.
456 + 396
852
874 - 681
193
Convert.
10 yards = ___ feet
(1 yard = 3 feet)
10 yards = 30 feet
Round 983,807 to the nearest ten.
983,810.
True or False: This is a right angle.

False
Identify <, >, or =.
8,324 ___ 8,423
8,324 < 8,423
Estimate. Then answer.
38 + 576
Reasonable estimate.
Answer: 614
716 - 498
218
Convert.
4 feet = ___ inches
(1 foot = 12 inches)
4 feet = 48 inches
Round 534,099 to the nearest ten-thousand.
530,000
An angle which measures 90 degrees is called a _____ angle.
right angle
Identify <, >, or =.
2,307 ___ 2,087
2,307 > 2,087
Estimate. Then answer.
241 + 779
Reasonable estimate.
Answer: 1,020
1,787 - 930
857
Convert.
6 feet = ___ inches
(1 foot = 12 inches)
6 feet = 72 inches
Round 75,778 to the nearest thousand.
76,000
Find the perimeter of the shape.

Perimeter = 22 m
Idenfity <, >, or =.
574 ___ 5(100) + 7(10) + 4(1)
574 = 5(100) + 7(10) + 4(1)
4,346 + 2,987
7,333
8,034 - 3,947
4,087
Convert.
12 Feet = ___ inches
(1 foot = 12 inches)
12 feet = 144 inches
Round 3,476,803 to the nearest hundred-thousand.
3,500,000
Find the perimeter.
Perimeter = 40 feet