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
7 × 10 = ______
77 − 10 = ______
15 + 20 = ______
40 + 20 = ______
4 × 10 = ______
8 × 10 = ______
53 + 10 = ______
27 + 10 = ______
54 − 10 = ______
3 × 10 = ______
37 + 20 = ______
18 + 20 = ______
63 + 10 = ______
61 + 10 = ______
26 + 10 = ______
27 − 10 = ______
54 + 20 = ______
62 − 10 = ______
86 + 20 = ______
30 − 10 = ______
