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
2 × 10 = ______
89 + 20 = ______
77 + 20 = ______
69 − 10 = ______
9 × 10 = ______
90 − 10 = ______
88 − 10 = ______
26 + 10 = ______
74 + 10 = ______
3 × 10 = ______
79 + 10 = ______
1 × 10 = ______
53 − 10 = ______
18 + 20 = ______
19 + 10 = ______
92 − 10 = ______
46 + 10 = ______
50 − 10 = ______
55 + 20 = ______
15 + 20 = ______
