Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
12 + 10 = ______
2 × 10 = ______
9 × 10 = ______
8 × 10 = ______
6 × 10 = ______
91 − 10 = ______
52 − 10 = ______
68 + 10 = ______
18 + 10 = ______
1 × 10 = ______
37 − 10 = ______
98 − 10 = ______
83 − 10 = ______
74 + 20 = ______
26 + 20 = ______
67 + 20 = ______
50 + 20 = ______
4 × 10 = ______
46 + 10 = ______
63 + 10 = ______
