
Double Trouble
Race through Twin Town with doubles, halves, near doubles and double-and-halve tricks for faster mental math.
Skills: Doubles facts, halves, near doubles, doubling and halving 2-, 3- and 4-digit numbers, double-and-halve multiplication strategies, story problems
OAS 1.N.2.3 · 1.N.3.2 · 2.N.2.2 · 2.N.2.4 · 2.N.3.2 · 3.N.2.2 · 3.N.2.7–8 · 4.N.2.1 · 4.N.2.5 · 4.A.2.1
Common Core: 1.OA.B.3 · 1.OA.C.6 · 2.OA.B.2 · 2.OA.C.3 · 2.NBT.B.5 · 3.OA.B.5 · 3.OA.C.7 · 3.NBT.A.2 · 4.OA.A.1 · 4.NBT.B.5–6


















































































































