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
89 − 10 = ______
73 − 10 = ______
80 − 10 = ______
9 × 10 = ______
17 + 20 = ______
25 + 10 = ______
51 + 10 = ______
19 + 10 = ______
3 × 10 = ______
46 + 10 = ______
58 − 10 = ______
2 × 10 = ______
52 − 10 = ______
68 + 20 = ______
57 − 10 = ______
7 × 10 = ______
79 − 10 = ______
60 + 10 = ______
26 + 20 = ______
63 + 20 = ______
