Multiplication
324 × 3 = ?
972
816 ÷ 4 = ?
204
3, 6, 9, 12, 15 — What’s the rule? What’s the next number?
Add 3 each time; next number is 18.
Rectangle: length = 8 cm, width = 5 cm. What’s the area?
8 × 5 = 40 cm²
32 × 10 = ?
320
215 × 4 = ?
860
935 ÷ 5 = ?
187
100, 90, 80, 70, 60 — What’s the rule?
Subtract 10 each time.
Rectangle: length = 9 m, width = 4 m. What’s the perimeter?
9 + 4) × 2 = 26 m
45 × 100 = ?
4,500
462 × 5 = ?
2,310
654 ÷ 6 = ?
109
5, 10, 20, 40, 80 — What’s the rule?
Multiply by 2 each time.
Square: side = 7 in. What’s the area?
7 × 7 = 49 in²
6,400 ÷ 10 = ?
640
138 × 6 = ?
828
864 ÷ 8 = ?
108
2, 5, 8, 11, 14 — What’s the rule and next two numbers?
Add 3 each time; next numbers are 17, 20.
Rectangle: length = 12 cm, width = 3 cm. What’s the perimeter?
(12 + 3) × 2 = 30 cm
72 x 100 = ?
7,200
707 × 8 = ?
5,656
945 ÷ 9 = ?
105
200, 400, 600, 800, 1,000 — What’s the rule and the next number?
Add 200 each time; next number is 1,200.
A rectangle has area 56 m² and width 8 m. What’s the length?
56 ÷ 8 = 7 m
93 × 1,000 = ?
93,000