What is front end estimation, friendly numbers, rounding
100
What is 32 rounded to the nearest 10?
30
100
Joe has 14 stickers. His sister gave him 7 more. How many stickers does he have now?
21
100
Which number is in the ones place: 897
7
100
Solve 12 + 31 using mental math
43
200
Solve this number sentence using front end estimation:
98 + 34 =
120
200
Round this number to the nearest 100: 287
300
200
Round to the nearest 100: 34
0
200
What is the value of the 4 in 345
A. 400
B. 4
C. 40
D. 0
C. 40
200
Find the sum
356 + 102
458
300
Solve this using front end estimation:
342 + 162 =
400
300
Round this number to the nearest 10
3,592
3,590
300
Estimate using front end estimation. Tell me the number sentence.
142 + 929 =
100 + 900 = 1,000
300
What is the value of the 9 in 8,902
A. 9,000
B. 9
C. 90
D. 900
D. 900
300
Find the sum.
614 + 529
1143
400
Solve and tell me the number sentence for this problem. Estimate using rounding. YOU choose what you want to round to.
287 + 132 =
varies
400
Round this number to the nearest 1,000
12,340
400
Which number is in the thousands place? 4,018
4
400
What is this number is expanded form? 1,387
1,000 + 300 + 80 + 7
400
What does sum mean? What are the addends?
Sum is the answer. Addends are the numbers you are adding together.
500
Hannah has 129 candy bars. Her sister gave her 92. Hannah now thinks she has more than 200 candy bars. Is she correct? Explain how you know BESIDES just adding the numbers together.
Yes, because 92 is almost 100.
500
Round these numbers to the nearest 100 and solve. Tell me your number sentence. 146 + 291 =
100 + 300 = 400
500
Solve using mental math
71 + 59
130
500
What is this number in expanded form and word form?
31,056
30,000 + 1,000 + 50 + 6
thirty one thousand fifty six