Mental math, rounding, and estimation
Round this number to the place of the underlines digit
787700
207 + 321
528
3.5 + 2.25
5.75
7.8-5.4
3.4
The student council ordered 105 balloons in red, blue, and purple. If 38 balloons are blue and 42 balloons are purple, how many are red?
25
Estimate the sum:
652+49
700
3,819,951 + 8,085,742
11,905,693
53.96 + 8.34
62.30
21.32-14.69
6.63
Madison has a $10 bill, a $20 bill, and 2 $5 bills. She buys lunch for $14. How much money does she have left after buying lunch?
$26
Round this number to the place of the underlined digit:
24.097
24.1
839,999 - 316,615
523,384
11.567 + 11.125
22.692
0.321-0.238
0.083
Rory earns $125 a month from selling newspapers, but he spends $20 each month. He is trying to save $800. How many months till he has saved that money?
About 8 months
Use mental math to subtract (5 seconds)
78-39
39
1,578,356 - 989,467
588,889
454,000.454 + 454.000454
454,454.454454
15.03 - 4.121
10.909
Theatre tickets for children cost $5. Adult tickets cost $3 more. If 2 adults and 2 children buy tickets, what is the total cost?
26
Julia is 147.32 cm Tall. Round her height to the nearest tenth, one, ten, and hundred
147.3
147
150
100
Cooper has a basket of 17 tomatoes. He makes a sauce with 9 tomatoes. If he wants to split the rest among 3 friends and himself, how many tomatoes would each person get?
2 tomatoes each
A mural measures 17.6m on two sides and 26.21 m on the other two sides. What is the perimeter of the mural?
87.62
The average persons upper leg measures 19.88 in and the lower leg measures 16.94 inches. How much longer is the upper leg than the lower leg?
2.94 in.
Create your own word problem with an answer of 7. The problem must have at least two steps and use both addition and subtraction.
various