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
27 − 10 = ______
39 + 20 = ______
54 − 10 = ______
27 + 20 = ______
88 + 20 = ______
21 + 10 = ______
19 + 10 = ______
8 × 10 = ______
92 − 10 = ______
19 + 20 = ______
51 + 20 = ______
5 × 10 = ______
3 × 10 = ______
28 + 10 = ______
62 − 10 = ______
45 − 10 = ______
75 − 10 = ______
22 + 10 = ______
16 + 10 = ______
4 × 10 = ______
