Rounding Numbers
Round this number to the nearest 10:
42
40
fill in the blank:
Even addend + Even addend = __________
Even sum
decompose this number:
45
40 + 5 = 45
solve:
23 + 41 = __
64
what number goes in the blanks?
12 - __ = 3
__ + 3 = 12
9
12 - 9 = 3
3 + 9 =12
Round this number to the nearest 10:
58
60
Fill in the blank:
Odd addend + Even addend = ____________
Odd sum
decompose this number:
92
90 + 2 = 92
solve:
47 - 29 = __
18
what number goes in the blanks?
25 - __ = 9
__ + 9 = 25
16
25 - 16 = 9
16 + 9 = 25
Round this number to the nearest 100:
587
600
Solve using addition patterns:
(write the addition pattern AND the answer)
253 + 124 = _____
odd addend + even addend = odd sum
sum = 377
decompose this number:
340
300 + 40 + 0 = 340
OR
300 + 40 =340
452 + 469 = ___
721
find the missing number:
Jack has 5 marbles, he wants to collect a total number of 18 marbles. How many more marbles does Jack need to collect?
13
5 + 13 = 18
18 - 5 = 13
Round this number to the nearest 100:
235
200
what is the addition pattern:
434 + 234 = 668
even addend + even addend = even sum
what is this number:
400 + 50 + 3 = ?
453
solve:
562 - 259
303
find the missing number:
A school bus has 13 students on the bus, it can hold a total of 27 students. How many more students can the bus driver pick up to get to the total?
14
27 - 14 = 13
13 + 14 = 27
Round this number to the nearest 10 AND 100:
692
Rounded to 10: 690
Rounded to 100: 700
create an equation using this pattern:
make sure to SOLVE your equation!
odd addend + odd addend = ____ sum
answers will vary
what is this number:
200 + 3 = ?
203
solve:
301 + 709 =
1,010
find the missing number:
A library has 435 books in total. There are 278 books on the shelves right now. The rest are being borrowed, how many books are being borrowed?
157
435 - 278 = 157
278 + 157 = 435