Add and Sub
124,350 + 32,410
156,760
3,250 × 2
6,500
Lena shaded part of a rectangle, and it shows 3/6. She says it is equal to 1/3. Is she correct? Explain why or why not using an equivalent fraction.
3/6=1/2, not 1/3
Answer: No, she is incorrect. The correct equivalent fraction is 1/2.
A hundredths grid is completely shaded. If 25 squares are shaded, what decimal represents the shaded part?
0.25
A library has 438 books in one section and 572 books in another section. How many books are there in total in both sections?
438+572=1,010
215,640 - 102,320
113,320
84,000 ÷ 4
21,000
Solve for ⬜: x/12=3/4
x=9
(So the fraction is 9/12 = 3/4)
Which decimal is equivalent to 7/10?
a) 0.07
b) 0.7
c) 0.77
d) 7.0
b) 0.7
A school has 1,234 students. 478 students moved to another school. How many students are left in the school?
1,234−478=756
178,965 + ⬜ = 275,713
96,748
7,125 × ⬜ = 49,875
7
Which fraction is greater: 5/8 or 3/5? Show your reasoning by making the denominators the same.
5/8=25/40
3/5=24/40
25/40 > 24/40, 5/8 is greater.
Answer: 5/8 is greater.
Emma ran 3.45 miles on Monday and 2.8 miles on Tuesday. How many miles did she run in total?
6.25 miles
A farmer has 28 baskets of apples. Each basket contains 16 apples. How many apples does the farmer have in total? After selling 320 apples, how many apples are left?
⬜ - 128,432 = 214,283
342,715
⬜ ÷ 6 = 23,500
141,000
A number line is divided into 10 equal parts. A point is placed at 6/10. What are two other equivalent fractions that would be located at the same point?
6/10=3/5=12/20
Fill in the missing number: 6.428−⬜=3.216
Answer: 3.212
Mrs. Liu has 360 crayons. She wants to pack the crayons into boxes, with 12 crayons in each box. How many boxes can she pack? After packing, she buys 5 more boxes of crayons, each with 12 crayons. How many crayons does she have now?
(475,385 - ⬜) + 132,658 = 351,300
256,743
(648,000 ÷ ⬜) × 9 = 81,000
81,000÷9=9,000
648,000÷⬜=9,000
648,000 ÷ ⬜ = 9,000
Answer: 72
Jack says that 2 1/4 is equivalent to 9/4. Lisa says that 2 1/4 is equivalent to 8/3. Who is correct? Explain by converting the mixed number to an improper fraction.
Jack is correct.
2 1/4 = 2 whole shaded in (4 parts each = 8 parts total) and 1/4 = 9th part shaded in so the fraction is 9/4
Liam bought a watermelon that weighed 5.725 kg. He cut off a piece weighing 2.68 kg and another piece weighing 1.347 kg. How much of the watermelon is left?
Total weight removed:
Remaining watermelon:
A company produces 450 chairs per day. How many chairs do they produce in 14 days? If they sell 1,100 chairs, how many chairs are left? Then, they produce 320 more chairs. How many chairs do they have now?