Question

tuesday
circle all the odd numbers.
21 34 67 120 78 87
what is the place value of the underlined digit?
7 295
estimate the sum of 196 and 482.
round each number to the nearest 10.
338 ____ 831 ____
798 ______
round each number to the nearest 100.
777 ____ 780 ____
150 ______
find the sum of 536 and 232.
find the difference between 827 and 533.
find the missing addend.
______ + 74 = 137
draw a picture that represents 3 x 50 = 150

Explanation:

Step1: Identify odd numbers

Odd numbers are not divisible evenly by 2. So 21, 67, 87 are odd.

Step2: Determine place - value

In 7295, the underlined 9 is in the tens place, so its place - value is 90.

Step3: Estimate sum

Round 196 to 200 and 482 to 500. Then 200 + 500=700.

Step4: Round to nearest 10

338 rounds to 340, 831 rounds to 830, 798 rounds to 800.

Step5: Round to nearest 100

777 rounds to 800, 780 rounds to 800, 150 rounds to 200.

Step6: Find sum

536+232 = 768.

Step7: Find difference

827 - 533=294.

Step8: Find missing addend

Let the missing addend be x. Then x=137 - 74 = 63.

Answer:

Odd numbers: 21, 67, 87
Place - value of 9 in 7295: 90
Estimated sum of 196 and 482: 700
338 rounded to nearest 10: 340
831 rounded to nearest 10: 830
798 rounded to nearest 10: 800
777 rounded to nearest 100: 800
780 rounded to nearest 100: 800
150 rounded to nearest 100: 200
Sum of 536 and 232: 768
Difference between 827 and 533: 294
Missing addend: 63