Addition
3,456 + 2,789
6,245
How to solve it:
Add each place-value column, regrouping when needed.
700 − 268
432
What is 7 × 8?
56
How to solve it:
7 groups of 8 make 56.
72 ÷ 8
9
How to solve it:
8 × 9 = 72.
There are 6 boxes of pencils. Each box contains 8 pencils. How many pencils are there altogether?
48 pencils
How to solve it:
6 × 8 = 48.
48,675 + 27,896
76,571
How to solve it:
Align the digits and regroup across the columns.
9,001 − 2,999
6,002
How to solve it:
Subtract 3,000, then add 1 back.
24 × 6
144
How to solve it:
20 × 6 = 120 and 4 × 6 = 24. Total = 144.
156 ÷ 12
13
How to solve it:
12 × 13 = 156.
A book has 125 pages. Sarah has read 48 pages. How many pages does she have left to read?
77 pages
How to solve it:
125 − 48 = 77.
186,459 + 278,765
465,224
How to solve it:
Add from right to left, carrying when necessary.
40,005 − 18,769
21,236
How to solve it:
Carefully regroup across the zeros.
36 × 14
504
How to solve it:
36 × 10 = 360 and 36 × 4 = 144. Total = 504.
936 ÷ 12
78
How to solve it:
12 × 78 = 936.
A school orders 24 boxes of markers. Each box contains 36 markers. The teachers share all the markers equally among 12 classrooms. How many markers does each classroom receive?
72 markers
How to solve it:
24 × 36 = 864. Then 864 ÷ 12 = 72.
395,807 + 268,946
664,753
How to solve it:
Remember to regroup across the thousands and hundreds.
400,005 − 238,716
161,289
How to solve it:
Regroup across the zeros, then check by addition.
47 × 36
1,692
How to solve it:
1,200 + 240 + 210 + 42 = 1,692 using an area model.
2,543 ÷ 12
211 R11
How to solve it:
12 × 211 = 2,532. The remainder is 11.
A school is taking 288 students on a field trip. Each student ticket costs $7. The school has a budget of $1,500. How much MORE money does the school need to pay for all the tickets?
$516
How to solve it:
288 × $7 = $2,016. $2,016 − $1,500 = $516.
487,659 + 398,775
886,434
How to solve it:
Estimate first: approximately 488,000 + 399,000 = 887,000.
800,000 − 467,895
332,105
How to solve it:
Use place-value regrouping across all the zeros.
125 × 48
6,000
How to solve it:
125 × 40 = 5,000 and 125 × 8 = 1,000.
4,872 ÷ 24
203
How to solve it:
24 × 200 = 4,800. The remaining 72 ÷ 24 = 3. Total = 203.
A school is organizing a field trip for 288 students. Each bus can carry 36 students.
How many buses are needed to transport all the students?
If each bus costs $450 to rent, how much will the school pay altogether?
Step 1: Divide the students by the number of students each bus can carry.
288÷36=8 buses
Step 2: Multiply the number of buses by the rental cost.
8x450=$3,600