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
88 + 20 = ______
24 + 10 = ______
8 × 10 = ______
46 + 10 = ______
67 − 10 = ______
3 × 10 = ______
42 − 10 = ______
2 × 10 = ______
26 + 20 = ______
4 × 10 = ______
33 + 10 = ______
52 + 10 = ______
35 − 10 = ______
98 − 10 = ______
37 + 20 = ______
34 + 20 = ______
32 − 10 = ______
1 × 10 = ______
67 + 20 = ______
70 + 10 = ______
