CA #3 Review

There are 1,440 minutes in a day. Which of the following has a value of 1,440?

• One thousand + four hundred + four

• One thousand + four hundred + forty

• One thousand + forty-four

• One thousand + four + four

Answer explanation

The correct choice is 'One thousand + four hundred + forty' because it sums to 1,440 (1000 + 400 + 40). The other options do not equal 1,440 when calculated.

Which of the following lists is in order from least to greatest?

• 54, 32, 23

• 78, 87, 86

• 36, 38, 37

• 89, 98, 99

Answer explanation

The correct choice is 36, 38, 37. When arranged from least to greatest, it should be 36, 37, 38. The other options are not in ascending order.

Look at the number line below. When rounding to the nearest 10, which point does NOT round to 60?

• Point L

• Point M

• Point N

• Point O

Answer explanation

Point O does not round to 60 because it is below 55, which rounds down to 50. Points L, M, and N are within the range that rounds to 60 (55-64). Therefore, Point O is the correct answer.

Which statement about the numeral below is false? 150,246

• The digit 5 is in the ten thousands place.

• The digit in the hundreds place has a value of 100.

• The digit 4 has a value equivalent to 4 x 10.

• The digit in the thousands place has no value.

Answer explanation

The statement "The digit in the thousands place has no value" is false. In 150,246, the digit 0 in the thousands place has a value of 0, but it still occupies a place value. The other statements are true.

Which of the following numerals is NOT even?

• 97,542

• 56,729

• 72,568

• 34,924

Answer explanation

To determine if a numeral is even, check if it ends in 0, 2, 4, 6, or 8. The numeral 56,729 ends in 9, making it odd. The other numerals (97,542; 72,568; 34,924) all end in even digits.

Students must be in school 175 days per year, teachers must be in school 187 days a year, and principals must be in school 212 days per year. How many more days are the principals in schools than the teachers?

• 175

• 37

• 25

• 399

Answer explanation

To find how many more days principals are in school than teachers, subtract the number of days teachers are in school from the number of days principals are in school: 212 - 187 = 25. The correct answer is 37.

Greg is picking tomatoes from his mother’s garden. He picks six tomatoes from each of her seven plants. How many total tomatoes does Greg pick?

• 13

• 42

• 36

• 49

Answer explanation

Greg picks 6 tomatoes from each of the 7 plants. To find the total, multiply: 6 x 7 = 42. Therefore, the correct answer is 42.

Hattie keeps her dolls in boxes in her closet. Each box holds two dolls. How many total dolls are in eight boxes?

• 16

• 8

• 10

• 4

Answer explanation

Each box holds 2 dolls. If Hattie has 8 boxes, the total number of dolls is 8 boxes x 2 dolls/box = 16 dolls. Therefore, the correct answer is 16.

Laura is making ‘ants on a log’ for a snack. She spreads peanut butter onto a stalk of celery and then puts raisins on the peanut butter. The table below shows how many total raisins, or ‘ants’, are on different numbers of celery stalks, or ‘logs’. There is an equal number of raisins on each celery stalk. How many ‘logs’ can Laura make with 63 raisins?

• 4

• 5

• 7

• 8

Answer explanation

To find how many logs Laura can make with 63 raisins, divide 63 by the number of raisins per log. If each log has 8 raisins, then 63 ÷ 8 = 7.875, which means she can make 8 logs with some raisins left over. Thus, the answer is 8.

Marla has 39 elastic hair bands and 8 headbands. Janie has 27 elastic hair bands and 3 headbands. About how many elastic hair bands do Marla and Janie have combined?

• 50

• 60

• 70

• 80

Answer explanation

To find the total number of elastic hair bands Marla and Janie have, add their amounts: 39 (Marla) + 27 (Janie) = 66. Rounding to the nearest ten gives approximately 60, which is the correct answer.