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
4 × 10 = ______
6 × 10 = ______
17 + 20 = ______
5 × 10 = ______
81 + 10 = ______
53 + 20 = ______
28 + 10 = ______
60 + 20 = ______
98 − 10 = ______
79 + 20 = ______
32 − 10 = ______
77 + 20 = ______
7 × 10 = ______
55 + 10 = ______
42 + 20 = ______
51 + 20 = ______
77 − 10 = ______
22 − 10 = ______
86 + 10 = ______
95 − 10 = ______
