Estimate the Sum
Round to the nearest ten: 47 + 32
50+30=80
Round to the nearest ten: 86 - 41
90-40=50
34+28
62
73−48
25
8 + 7
15
Round to the nearest hundred: 263 + 418
300+400=700
Round to the nearest hundred: 742 - 318
700-300=400
267+458
725
624 - 287
337
16 - 9
7
Round to the nearest thousand: 2,476 + 3,218
2,000+3,000=5,000
Round to the nearest thousand: 6,681 - 2,217
7,000-2,000=5,000
1,846+2,975
4,821
3,502−1,768
1,734
____ + 6 = 14
8
Round each number to the nearest hundred: 5,649 + 2,351
5,600+2,400=8,000
Round each number to the nearest hundred: 9,052 - 3,678
9,100-3,700=5.400
6,738+14,596
21,334
8,004−3,579
4,425
Complete the fact family using 5, 8, and 13. Write TWO addition and two subtraction equations.
5+8=13
8+5=13
13-8=5
13-5=8
Round each number to the nearest ten: 14,682 + 27,451
14,680+27,460=42,140
Round each number to the nearest ten: 42,615 - 18,749
42,620-18,750=23,870
28,475+36,829
65,304
50,000−27,846
22,154
Complete the fact family using 7, 9, and 16. Write two addition and two subtraction equations
7+9=16
9+7=16
16-7=9
16-9=7