Round It UP
Round 46 to the nearest 10.
50
What is the value of the digit 7 in 7,426?
7,000
Find the sum: 235 + 124.
359
Find the product: 3 × 20.
60
Write 582 in expanded form.
500 + 80 + 2
A two-digit number rounds to 80 when rounded to the nearest 10. Give one possible number.
Any whole number from 75 to 84.
Write 4,305 in expanded form.
4,000 + 300 + 5
Find the difference: 672 − 248.
424
Find the product: 6 × 40.
240
Round 764 to the nearest 10 and nearest 100.
760 and 800
Round 347 to the nearest 100.
300
Represent 6,208 in standard form, word form, and expanded form.
6,208; six thousand two hundred eight; 6,000 + 200 + 8
Choose two numbers whose sum is closest to 1,000: 234, 617, 954, 89, 326, 742, 173.
954 + 89 = 1,043 (43 away).
2 × 90 = 180. Give another one-digit number × multiple of 10 that equals 180.
3 × 60, 6 × 30, or 9 × 20.
Find the missing number: 425 + ___ = 800.
375
A three-digit number rounds to 600 when rounded to the nearest 100. Give two possible numbers.
Any two whole numbers from 550 to 649.
Write the number: 8 thousands + 3 hundreds + 0 tens + 9 ones.
8,309
A school collected 468 cans Monday and 357 Tuesday. How many altogether?
825 cans
A teacher has 7 boxes with 80 pencils in each box. How many pencils?
560 pencils
A school orders 9 packs of 60 markers. How many markers? Explain.
540 markers; 9 × 6 tens = 54 tens.
Maya says 650 rounds to 600 to the nearest hundred. Is Maya correct? Explain.
No. 650 rounds to 700 because halfway numbers round up.
A student writes 5,407 as 5,000 + 400 + 70. Explain the error and correct it.
The ones digit is 7, not 70. Correct: 5,000 + 400 + 7.
Jamal solved 703 − 286 and got 583. Is he correct? Explain.
No. The correct answer is 417; regroup across the zero.
A student says 8 × 70 = 8 × 7 + 0 = 56. Explain the error.
8 × 70 = 560. Eight groups of seven tens make 56 tens.
A school has 387 red tickets and 256 blue tickets. Round each to the nearest hundred to estimate the total, then find the exact total.
Estimate: 400 + 300 = 700. Exact: 643.