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
48 + 20 = ______
37 + 20 = ______
9 × 10 = ______
62 + 10 = ______
18 + 10 = ______
1 × 10 = ______
31 − 10 = ______
16 + 20 = ______
52 − 10 = ______
4 × 10 = ______
7 × 10 = ______
26 + 20 = ______
83 + 20 = ______
81 + 10 = ______
39 − 10 = ______
63 + 10 = ______
45 + 20 = ______
34 + 10 = ______
22 − 10 = ______
3 × 10 = ______
