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
54 + 20 = ______
79 + 20 = ______
3 × 10 = ______
27 + 10 = ______
88 − 10 = ______
75 − 10 = ______
47 + 10 = ______
27 − 10 = ______
1 × 10 = ______
18 + 10 = ______
50 − 10 = ______
9 × 10 = ______
83 − 10 = ______
87 − 10 = ______
37 + 10 = ______
7 × 10 = ______
49 + 20 = ______
89 + 10 = ______
5 × 10 = ______
40 + 10 = ______
