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
9 × 10 = ______
3 × 10 = ______
37 + 10 = ______
5 × 10 = ______
4 × 10 = ______
22 + 10 = ______
47 + 10 = ______
26 − 10 = ______
52 − 10 = ______
24 − 10 = ______
29 − 10 = ______
26 + 10 = ______
38 − 10 = ______
60 + 10 = ______
29 + 10 = ______
79 + 20 = ______
75 − 10 = ______
45 + 20 = ______
39 + 20 = ______
57 + 20 = ______
