place value and rounding
Which of the following has 2 in the ten’s place?
A. 3256 B.6527
C.9652 D. 2747
B. 6527
how can i decompose 365
300 + 60 + 5
true or false
odd + odd = even
true!
what are the two types of changes that erosion and weathering can cause
quick changes and slow changes
can humans slow weathering and erosion
yes
What is 581 rounded to the nearest 100?
a. 500 b. 580
c. 585 d. 600
d. 600
if i am adjusting when adding, what do i need to do?
if odd+ odd is even
and even+ even is even
how do I make an odd answer?
odd + even = odd
what are the 3 types of erosion?
wind, water, ice
what are 3 ways we can prevent erosion
windbreak
waterbreak
What is 267 rounded to the nearest 10s.
a. 260 b. 270
c. 300 d. 265
b. 270
if i am adjusting by subtraction, what are the two ways i can adjust
i can add or subtract the same number from both sides
what are the 3 ways to write a number
expanded (ex: 2000+300+50+9)
word (two thousand three hundred fifty nine)
standard (2359)
what is the difference between weathering and erosion
weathring is the breaking down of rock
erosion is moving the small pieces
a person whos job it is to design bridges, roads, and other structures based on the land
solve this equation by estimating the answer (hint: you need to round)
256 + 398 =
100s: 300 + 400 = 700
decompose this equation
598 - 368 =?
598 - 368 =?
598 - 300 = 298
298 - 60 = 238
238 - 8 = 230
Jiyu plays piano everyday for three weeks. In the first week, she played for 143 minutes. In the second week, she played for 250 minutes. In the third week, she played for 215 minutes. How many minutes in total did Jiyu play piano for?
143 + 250 + 215 =
393 + 215 = 608 minutes
landslides
floods
earthquake
what is the function of a straw wattle?
it prevents land erosion caused by water by stopping the water from going down
Reina and Anna are solving 369 + 254. Reina says they can round it to be 370 + 250. Anna says they can round to 400 + 300. Who is right?
Both girls are right
369 + 254 rounded to the nearest 10s is 370 + 250.
369 + 254 rounded to the nearest 100s is 400 + 300
:)
adjust this equation
295 - 178 =
295 - 178 = 295 - 178 =
+5 +5 -8 -8
300 - 183 = 117 287 -170 = 117
Lian was traveling with his family to Japan. Japan was 600km away. Lian’s family flew 232 km. How many more kilometers does Lian’s family have left to travel?
Make the chart and solve for --?--
232 + ? = 600
600 - 232 = ?
? = 368 km
how does a volcano cause the landscape to change?
when it erupts, the lava melts rock. it also cools and forms new land
i live in a beach house and a ton of sand is being blown at my house, causing weathering. how can i reduce the amount of sand being blown? Why will it help?
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