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
4 × 10 = ______
29 + 10 = ______
46 − 10 = ______
55 − 10 = ______
18 + 20 = ______
34 + 20 = ______
36 + 20 = ______
69 + 20 = ______
65 + 10 = ______
52 + 10 = ______
44 − 10 = ______
2 × 10 = ______
26 + 20 = ______
75 − 10 = ______
52 + 20 = ______
52 − 10 = ______
1 × 10 = ______
22 − 10 = ______
50 + 10 = ______
81 + 20 = ______
