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Number Sense Basics
The Classic, The Classic!
| Question | Answer |
|---|---|
| Page 5 – Add to 10 Ones Digit | |
| 71 × 79 | 5609 |
| 68 × 72 | 4896 |
| 56 × 54 | 3024 |
| 87 × 93 | 8091 |
| 34 × 36 | 1224 |
| Page 6 – Add to 10 Tens Digit | |
| 43 × 63 | 2709 |
| 27 × 87 | 2349 |
| 56 × 46 | 2576 |
| 34 × 74 | 2516 |
| 29 × 71 | 2059 |
| Page 7 – Multiplying by 25 | |
| 32 × 25 | 800 |
| 48 × 25 | 1200 |
| 76 × 25 | 1900 |
| 55 × 25 | 1375 |
| 64 × 25 | 1600 |
| Page 8 – Multiplying by 50 | |
| 32 × 50 | 1600 |
| 48 × 50 | 2400 |
| 76 × 50 | 3800 |
| 55 × 50 | 2750 |
| 64 × 50 | 3200 |
| Page 9 – Multiplying by 75 | |
| 32 × 75 | 2400 |
| 48 × 75 | 3600 |
| 76 × 75 | 5700 |
| 55 × 75 | 4125 |
| 64 × 75 | 4800 |
| Page 10 – Multiplying by 125 | |
| 64 × 125 | 8000 |
| 48 × 125 | 6000 |
| 32 × 125 | 4000 |
| 56 × 125 | 7000 |
| 36 × 125 | 4500 |
| Page 11 – Multiplying by 11 | |
| 11 × 124 | 1364 |
| 11 × 237 | 2607 |
| 11 × 346 | 3806 |
| 11 × 459 | 5049 |
| 11 × 512 | 5632 |
| Page 12 – Multiplying by 111 | |
| 111 × 125 | 13875 |
| 111 × 246 | 27306 |
| 111 × 312 | 34632 |
| 111 × 178 | 19758 |
| 111 × 405 | 44955 |
| Page 13 – Multiplying by 12 | |
| 12 × 125 | 1500 |
| 12 × 248 | 2976 |
| 12 × 317 | 3804 |
| 12 × 184 | 2208 |
| 12 × 456 | 5472 |
| Page 14 – Multiplying by 15 | |
| 15 × 18 | 270 |
| 15 × 23 | 345 |
| 15 × 32 | 480 |
| 15 × 27 | 405 |
| 15 × 41 | 615 |
| Page 15 – Multiply by 16 2/3 | |
| 18 × 16 2/3 | 300 |
| 24 × 16 2/3 | 400 |
| 30 × 16 2/3 | 500 |
| 12 × 16 2/3 | 200 |
| 36 × 16 2/3 | 600 |
| Page 16 – Multiplying by 101 | |
| 101 × 28 | 2828 |
| 101 × 45 | 4545 |
| 101 × 76 | 7676 |
| 101 × 132 | 13332 |
| 101 × 89 | 8989 |
| Page 17 – Multiplying by 1001 | |
| 1001 × 28 | 28028 |
| 1001 × 45 | 45045 |
| 1001 × 76 | 76076 |
| 1001 × 132 | 132132 |
| 1001 × 89 | 89089 |
| Page 18 – Multiplying both over 100 | |
| 104 × 112 | 11648 |
| 1004 × 1002 | 1008016 |
| 107 × 115 | 12305 |
| 123 × 134 | 16482 |
| 110 × 118 | 12980 |
| Page 19 – Multiplying both under 100 | |
| 94 × 92 | 8648 |
| 87 × 95 | 8265 |
| 63 × 88 | 5544 |
| 72 × 96 | 6912 |
| 79 × 91 | 7189 |
| Page 20 – Multiplying over/under 100 | |
| 108 × 95 | 10260 |
| 117 × 88 | 10296 |
| 124 × 97 | 12028 |
| 103 × 89 | 9167 |
| 132 × 92 | 12144 |
| Page 21 – Double/Half Multiplication | |
| 4.5 × 18 | 81 |
| 9 × 9 | 81 |
| 3 × 27 | 81 |
| 6 × 13.5 | 81 |
| 1.5 × 54 | 81 |
| Page 22 – Double/Double Division | |
| 4.5 ÷ 1.5 | 3 |
| 9 ÷ 3 | 3 |
| 18 ÷ 6 | 3 |
| 12 ÷ 4 | 3 |
| 6 ÷ 2 | 3 |
| Page 23 – Adding/Subtracting Fractions | |
| 1/2 + 3/4 | 5/4 |
| 2/3 + 4/5 | 22/15 |
| 5/6 - 1/3 | 1/2 |
| 7/8 + 1/8 | 1 |
| 3/4 - 2/5 | 7/20 |
| Page 24 – FOIL | |
| 12 × 13 | 156 |
| 23 × 14 | 322 |
| 15 × 16 | 240 |
| 21 × 17 | 357 |
| 34 × 12 | 408 |
| Page 25 – Multiplying over/under square | |
| 38 × 42 | 1596 |
| 47 × 53 | 2491 |
| 62 × 68 | 4216 |
| 76 × 84 | 6384 |
| 29 × 31 | 899 |
Created by:
JudeBellingham
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